|
| ID | Title | Source | Authors | Difficulty |
|---|
| 1001 | Reverse Root | | 27902 | 15 |
| 1000 | A+B Problem | | 91726 | 16 |
| 1293 | Eniya | Spring School Contest 2004 | 28670 | 16 |
| 1785 | Lost in Localization | Ural Regional School Programming Contest 2010 | 18135 | 16 |
| 1409 | Two Gangsters | Autumn School Contest 2005 | 27385 | 17 |
| 2012 | About Grisha N. | NEERC 2014 Eastern Subregional | 10472 | 17 |
| 1877 | Bicycle Codes | Ural Regional School Programming Contest 2011 | 13402 | 19 |
| 2001 | Mathematicians and Berries | Ural Regional School Programming Contest 2013 | 9026 | 22 |
| 1264 | Workdays | Autumn School Contest 2003 | 19861 | 23 |
| 1787 | Turn for MEGA | Ural Regional School Programming Contest 2010 | 11337 | 26 |
| 1820 | Ural Steaks | USU Personal Contest 2011 | 10756 | 26 |
| 2066 | Simple Expression | Ural Regional School Programming Contest 2015 | 5468 | 27 |
| 1197 | Lonesome Knight | Spring School Contest 2002 | 15655 | 29 |
| 2100 | Wedding Dinner | Ural FU Junior Championship 2016 | 4199 | 29 |
| 1880 | Psych Up's Eigenvalues | Ural Regional School Programming Contest 2011 | 8541 | 30 |
| 1639 | Chocolate 2 | Autumn School Contest 2008 | 10950 | 33 |
| 1910 | Titan Ruins: Hidden Entrance | NEERC 2012 Eastern Subregional | 7068 | 33 |
| 1924 | Four Imps | Ural Regional School Programming Contest 2012 | 6580 | 35 |
| 2023 | Donald is a postman | NEERC 2014 Eastern Subregional | 4987 | 35 |
| 1313 | Some Words about Sport | Ural Championship 2004. Round 1 | 12766 | 36 |
| 1209 | 1, 10, 100, 1000... | Autumn School Contest 2002 | 12396 | 37 |
| 1068 | Sum | | 33455 | 38 |
| 1225 | Flags | NEERC 2002 Central Subregional | 12088 | 38 |
| 1319 | Hotel | Ural Championship 2004. Round 2 | 11606 | 40 |
| 1567 | SMS-spam | USU Championship 2007 | 9803 | 40 |
| 1585 | Penguins | NEERC 2007 Eastern Subregional | 9687 | 40 |
| 1581 | Teamwork | Autumn School Contest 2007 | 9522 | 41 |
| 1263 | Elections | Autumn School Contest 2003 | 10491 | 44 |
| 1991 | The battle near the swamp | NEERC 2013 Eastern Subregional | 4614 | 44 |
| 1100 | Final Standings | Tetrahedron Team Online Contest May 2001 | 9748 | 46 |
| 2056 | Scholarship | Ural Championship 2015 | 3404 | 47 |
| 1327 | Fuses | Autumn School Contest 2004 | 9812 | 48 |
| 1493 | One Step from Happiness | Autumn School Contest 2006 | 8795 | 49 |
| 1607 | Taxi | USU Personal Contest 2008 | 7578 | 50 |
| 1243 | Divorce of the Seven Dwarfs | USU Personal Contest 2003 | 8982 | 51 |
| 1876 | Centipede's Morning | Ural Regional School Programming Contest 2011 | 5145 | 51 |
| 1349 | Farm | Spring School Contest 2005 | 8950 | 52 |
| 1545 | Hieroglyphs | Ural Championship 2007 | 7883 | 52 |
| 1110 | Power | Bulgarian Online Contest September 2001 | 8474 | 53 |
| 1496 | Spammer | Autumn School Contest 2006 | 8099 | 53 |
| 1893 | A380 | NEERC 2011 Eastern Subregional | 4758 | 55 |
| 1196 | History Exam | Spring School Contest 2002 | 7927 | 57 |
| 1837 | Isenbaev's Number | Ural Championship 2011 | 4819 | 57 |
| 1881 | Long problem statement | Ural Regional School Programming Contest 2011 | 4590 | 57 |
| 1563 | Bayan | USU Championship 2007 | 6813 | 58 |
| 1636 | Penalty Time | USU Championship 2008 | 6128 | 58 |
| 1654 | Cipher Message | NEERC 2008 Eastern Subregional | 5985 | 59 |
| 1723 | Sandro's Book | Ural Regional School Programming Contest 2009 | 5293 | 61 |
| 1149 | Sinus Dances | | 7271 | 62 |
| 1925 | British Scientists Save the World | Ural Regional School Programming Contest 2012 | 3734 | 62 |
| 1617 | Flat Spots | Ural Championship 2008 | 5907 | 64 |
| 2002 | Test Task | Ural Regional School Programming Contest 2013 | 3022 | 66 |
| 2035 | Another Dress Rehearsal | Ural Regional School Programming Contest 2014 | 2640 | 66 |
| 1224 | Spiral | NEERC 2002 Central Subregional | 6739 | 67 |
| 1457 | Heating Main | Timus Top Coders: Second Challenge | 6661 | 67 |
| 1025 | Democracy in Danger | Autumn School Contest 2000 | 20384 | 68 |
| 1083 | Factorials!!! | Spring School Contest 2001 | 17696 | 69 |
| 2111 | Plato | University academic school olympiad in informatics 2019 | 892 | 69 |
| 1638 | Bookworm | USU Championship 2008 | 5138 | 70 |
| 1935 | Tears of Drowned | Ural FU Championship 2012 | 3183 | 72 |
| 2031 | Overturned Numbers | Ural Regional School Programming Contest 2014 | 2425 | 72 |
| 1119 | Metro | Autumn School Contest 2001 | 6070 | 74 |
| 1502 | Domino Dots | NEERC 2006 Eastern Subregional | 5746 | 75 |
| 1106 | Two Teams | Tetrahedron Team Online Contest May 2001 | 5825 | 76 |
| 1131 | Copying | USU Championship 2001 | 5908 | 76 |
| 1792 | Hamming Code | Ural Regional School Programming Contest 2010 | 3809 | 76 |
| 1139 | City Blocks | NEERC 2001 Central Subregional | 5772 | 77 |
| 1712 | Cipher Grille | NEERC 2009 Eastern Subregional | 4127 | 78 |
| 2005 | Taxi for Programmers | Ural Regional School Programming Contest 2013 | 2588 | 78 |
| 1290 | Sabotage | Spring School Contest 2004 | 5855 | 79 |
| 1146 | Maximum Sum | DSAP Vietnam Online Contest November 2001 | 5524 | 81 |
| 1194 | Handshakes | Spring School Contest 2002 | 5575 | 81 |
| 1404 | Easy to Hack! | Autumn School Contest 2005 | 5795 | 81 |
| 1297 | Palindrome | Spring School Contest 2004 | 5499 | 84 |
| 2011 | Long Statement | Ural Regional School Programming Contest 2013 | 2348 | 85 |
| 2025 | Line Fighting | Ural Regional School Programming Contest 2014 | 2052 | 85 |
| 2068 | Game of Nuts | Ural Regional School Programming Contest 2015 | 1752 | 85 |
| 1120 | Sum of Sequential Numbers | Autumn School Contest 2001 | 5160 | 86 |
| 1180 | Stone Game | USU Personal Contest 2002 | 5223 | 86 |
| 1005 | Stone Pile | USU Championship 1997 | 15968 | 87 |
| 1203 | Scientific Conference | USU Local Contest. March 2002 | 5167 | 87 |
| 1510 | Order | NEERC 2006 Eastern Subregional | 4877 | 88 |
| 1296 | Hyperjump | Spring School Contest 2004 | 5181 | 89 |
| 1601 | AntiCAPS | USU Personal Contest 2008 | 4259 | 89 |
| 1161 | Stripies | NEERC 2001 Northern Subregional | 4913 | 91 |
| 1446 | Sorting Hat | Ural Championship 2006 | 4968 | 91 |
| 1370 | Magician | Ural Championship 2005. Round 2 | 5087 | 92 |
| 1104 | Don’t Ask Woman about Her Age | Tetrahedron Team Online Contest May 2001 | 4758 | 93 |
| 1009 | K-based Numbers | USU Championship 1997 | 14721 | 94 |
| 1642 | 1D Maze | Autumn School Contest 2008 | 3802 | 94 |
| 1644 | A Whole Lot of Walnuts | Autumn School Contest 2008 | 3731 | 95 |
| 2018 | The Debut Album | NEERC 2014 Eastern Subregional | 1823 | 96 |
| 1731 | Dill | Ural Regional School Programming Contest 2009 | 3278 | 98 |
| 2033 | Devices | Ural Regional School Programming Contest 2014 | 1775 | 98 |
| 1014 | Product of Digits | USU Local Contest. 1999 | 13980 | 99 |
| 1136 | Parliament | NEERC 2001 Central Subregional | 4520 | 99 |
| 1330 | Intervals | Autumn School Contest 2004 | 4689 | 99 |
| 1796 | Amusement Park | Ural Regional School Programming Contest 2010 | 2943 | 99 |
| 1902 | Neo-Venice | Ural Championship 2012 | 2329 | 99 |
| 1126 | Magnetic Storms | USU Championship 2001 | 4456 | 100 |
| 1786 | Sandro's Biography | Ural Regional School Programming Contest 2010 | 2921 | 100 |
| 1214 | Strange Procedure | Autumn School Contest 2002 | 4499 | 101 |
| 1020 | Rope | Autumn School Contest 2000 | 13533 | 102 |
| 1118 | Nontrivial Numbers | Autumn School Contest 2001 | 4353 | 102 |
| 1573 | Alchemy | Autumn School Contest 2007 | 3796 | 103 |
| 1228 | Array | NEERC 2002 Central Subregional | 4357 | 104 |
| 1353 | Milliard Vasya's Function | Spring School Contest 2005 | 4422 | 106 |
| 1086 | Cryptography | Spring School Contest 2001 | 11167 | 109 |
| 1192 | Ball in a Dream | Spring School Contest 2002 | 4103 | 109 |
| 1079 | Maximum | Winter Mathematical Festival Varna 2001 | 11176 | 110 |
| 1226 | esreveR redrO | NEERC 2002 Central Subregional | 4097 | 111 |
| 1260 | Nudnik Photographer | Autumn School Contest 2003 | 4111 | 112 |
| 2010 | Sasha the Young Grandmaster | Ural Regional School Programming Contest 2013 | 1789 | 112 |
| 1777 | Anindilyakwa | Ural SU Championship 2010 | 2568 | 113 |
| 2138 | The Good, the Bad and the Ugly | Ural School Programming Contest 2019 | 426 | 115 |
| 1219 | Symbolic Sequence | USU Championship 2002 | 3902 | 116 |
| 1582 | Bookmakers | NEERC 2007 Eastern Subregional | 3371 | 116 |
| 1044 | Lucky Tickets. Easy! | USU Championship 2000 | 11413 | 119 |
| 1082 | Gaby Ivanushka | Spring School Contest 2001 | 10221 | 119 |
| 1123 | Salary | Autumn School Contest 2001 | 3736 | 119 |
| 1283 | Dwarf | USU Personal Contest 2004 | 3863 | 120 |
| 1206 | Sum of Digits of the Sum of Numbers | USU Local Contest. March 2002 | 3727 | 121 |
| 1336 | Problem of Ben Betsalel | Autumn School Contest 2004 | 3849 | 121 |
| 1982 | Electrification Plan | Ural FU Championship 2013 | 1636 | 123 |
| 1711 | Code Names | NEERC 2009 Eastern Subregional | 2595 | 125 |
| 1688 | Team.GOV! | USU Personal Contest 2009 | 2730 | 126 |
| 2102 | Michael and Cryptography | Ural FU Junior Championship 2016 | 956 | 126 |
| 1352 | Mersenne Primes | Spring School Contest 2005 | 3619 | 129 |
| 1683 | Fridge | USU Personal Contest 2009 | 2672 | 129 |
| 1402 | Cocktails | Autumn School Contest 2005 | 3583 | 131 |
| 1725 | Sold Out! | Ural Regional School Programming Contest 2009 | 2453 | 131 |
| 2020 | Traffic Jam in Flower Town | NEERC 2014 Eastern Subregional | 1334 | 131 |
| 2000 | Grand Theft Array V | Ural Regional School Programming Contest 2013 | 1500 | 133 |
| 2142 | Magic | Ural School Programming Contest 2019 | 364 | 134 |
| 1671 | Anansi's Cobweb | Petrozavodsk Summer 2008. USU Contest | 2579 | 135 |
| 1022 | Genealogical Tree | Autumn School Contest 2000 | 10058 | 137 |
| 1167 | Bicolored Horses | Romanian Online Contest December 2001 | 3265 | 137 |
| 1222 | Chernobyl’ Eagles | USU Championship 2002 | 3255 | 139 |
| 1740 | Deer is Better! | USU Championship 2009 | 2306 | 139 |
| 1868 | Prediction Contest | Ural FU Championship 2011 | 1866 | 139 |
| 1021 | Sacrament of the Sum | Autumn School Contest 2000 | 9732 | 142 |
| 1572 | Yekaterinozavodsk Great Well | Autumn School Contest 2007 | 2768 | 142 |
| 1612 | Tram Forum | Ural Championship 2008 | 2640 | 142 |
| 1576 | Telephone Tariffs | Autumn School Contest 2007 | 2743 | 143 |
| 1178 | Akbardin’s Roads | USU Personal Contest 2002 | 3095 | 145 |
| 1306 | Sequence Median | Ural Championship 1998 | 3199 | 145 |
| 2149 | Pigeonhole Principle | Ural School Programming Contest 2019 | 335 | 145 |
| 1084 | Goat in the Garden | Spring School Contest 2001 | 8297 | 146 |
| 1280 | Topological Sorting | NEERC 2003 Central Subregional | 3159 | 146 |
| 1964 | Chinese Dialects | Ural FU Personal Contest 2013 | 1440 | 146 |
| 1026 | Questions and Answers | Autumn School Contest 2000 | 9385 | 147 |
| 1210 | Kind Spirits | Autumn School Contest 2002 | 3079 | 147 |
| 1354 | Palindrome. Again Palindrome | Spring School Contest 2005 | 3188 | 147 |
| 1788 | On the Benefits of Umbrellas | Ural Regional School Programming Contest 2010 | 1982 | 147 |
| 1846 | GCD 2010 | Petrozavodsk Summer 2010. USU Contest | 1779 | 147 |
| 1931 | Excellent Team | Ural FU Championship 2012 | 1557 | 147 |
| 1142 | Relations | DSAP Vietnam Online Contest November 2001 | 3016 | 148 |
| 1073 | Square Country | USU Personal Contest 2001 | 8230 | 150 |
| 1586 | Threeprime Numbers | NEERC 2007 Eastern Subregional | 2602 | 150 |
| 1295 | Crazy Notions | Spring School Contest 2004 | 3036 | 152 |
| 1613 | For Fans of Statistics | Ural Championship 2008 | 2464 | 152 |
| 1272 | Non-Yekaterinburg Subway | USU Championship 2003 | 3014 | 153 |
| 1494 | Monobilliards | Autumn School Contest 2006 | 2800 | 153 |
| 1709 | Penguin-Avia | Ural Championship 2009 | 2207 | 154 |
| 1017 | Staircases | USU Local Contest. 1999 | 8911 | 155 |
| 1864 | Get-Together at Den's | Ural FU Championship 2011 | 1679 | 155 |
| 1506 | Columns of Numbers | NEERC 2006 Eastern Subregional | 2751 | 156 |
| 1821 | Biathlon | USU Personal Contest 2011 | 1757 | 158 |
| 1152 | False Mirrors | Ural Championship 2001. Round 2 | 2737 | 163 |
| 1756 | One and a Half Diggers | USU Personal Contest 2010 | 1896 | 163 |
| 1135 | Recruits | NEERC 2001 Central Subregional | 2724 | 164 |
| 1157 | Young Tiler | Ural Championship 2001. Round 2 | 2695 | 166 |
| 1640 | Circle of Winter | Autumn School Contest 2008 | 2122 | 167 |
| 1213 | Cockroaches! | Autumn School Contest 2002 | 2686 | 169 |
| 2115 | The Knowledge Day | University academic school olympiad in informatics 2019 | 358 | 170 |
| 1102 | Strange Dialog | Tetrahedron Team Online Contest May 2001 | 2575 | 172 |
| 1874 | Football Goal | Ural Regional School Programming Contest 2011 | 1502 | 172 |
| 1984 | Dummy Guy | Ural FU Championship 2013 | 1169 | 172 |
| 2069 | Hard Rock | Ural Regional School Programming Contest 2015 | 859 | 172 |
| 1012 | K-based Numbers. Version 2 | | 8003 | 173 |
| 2072 | Kirill the Gardener 3 | Ural Regional School Programming Contest 2015 | 851 | 173 |
| 1993 | This cheeseburger you don't need | NEERC 2013 Eastern Subregional | 1151 | 174 |
| 1413 | Mars Jumper | USU Championship 2005 | 2677 | 175 |
| 1685 | Orthography | USU Personal Contest 2009 | 1966 | 175 |
| 1930 | Ivan's Car | Ural Regional School Programming Contest 2012 | 1299 | 176 |
| 1335 | White Thesis | Autumn School Contest 2004 | 2633 | 177 |
| 1423 | String Tale | Timus Top Coders: First Challenge | 2573 | 177 |
| 1193 | Queue at the Exam | Spring School Contest 2002 | 2520 | 178 |
| 1794 | Masterpieces of World Architecture | Ural Regional School Programming Contest 2010 | 1614 | 180 |
| 2073 | Log Files | Ural Regional School Programming Contest 2015 | 821 | 180 |
| 1134 | Cards | NEERC 2001 Central Subregional | 2469 | 181 |
| 1133 | Fibonacci Sequence | NEERC 2001 Central Subregional | 2428 | 184 |
| 1727 | Znaika's Magic Numbers | Ural Regional School Programming Contest 2009 | 1754 | 184 |
| 1769 | Old Ural Legend | Ural Championship 2010 | 1661 | 184 |
| 1800 | Murphy's Law | NEERC 2010 Eastern Subregional | 1565 | 185 |
| 1878 | Rubinchik's Cube | Ural Regional School Programming Contest 2011 | 1397 | 185 |
| 1114 | Boxes | Bulgarian Online Contest September 2001 | 2392 | 186 |
| 1987 | Nested Segments | Ural FU Championship 2013 | 1080 | 186 |
| 1915 | Titan Ruins: Reconstruction of Bygones | NEERC 2012 Eastern Subregional | 1214 | 189 |
| 1048 | Superlong Sums | USU Local Contest. March 2000 | 7084 | 190 |
| 1348 | Goat in the Garden 2 | Spring School Contest 2005 | 2452 | 191 |
| 1645 | Ski Race | Autumn School Contest 2008 | 1851 | 192 |
| 1635 | Mnemonics and Palindromes | USU Championship 2008 | 1832 | 194 |
| 1789 | Searching for the Dodecahedron | Ural Regional School Programming Contest 2010 | 1492 | 194 |
| 1013 | K-based Numbers. Version 3 | | 905 | 196 |
| 1656 | Far Away Kingdom's Army | NEERC 2008 Eastern Subregional | 1796 | 197 |
| 2070 | Interesting Numbers | Ural Regional School Programming Contest 2015 | 749 | 197 |
| 1112 | Cover | Bulgarian Online Contest September 2001 | 2246 | 198 |
| 1138 | Integer Percentage | NEERC 2001 Central Subregional | 2249 | 198 |
| 1885 | Passenger Comfort | NEERC 2011 Eastern Subregional | 1305 | 198 |
| 2091 | Natural Selection | Ural FU Personal Contest 2014 | 649 | 198 |
| 1164 | Fillword | NEERC 2001 Northern Subregional | 2241 | 199 |
| 1944 | Record of the Attack at the Orbit | Ural FU Personal Contest 2012 | 1123 | 199 |
| 1490 | Fire Circle | Autumn School Contest 2006 | 2150 | 200 |
| 1917 | Titan Ruins: Deadly Accuracy | NEERC 2012 Eastern Subregional | 1140 | 201 |
| 1471 | Distance in the Tree | Petrozavodsk Summer 2006. Ural+Orel Contest | 2134 | 202 |
| 1680 | The First Nonqualifying | USU Personal Contest 2009 | 1685 | 204 |
| 1023 | Buttons | Autumn School Contest 2000 | 6742 | 205 |
| 1183 | Brackets Sequence | NEERC 2001 | 2185 | 205 |
| 1242 | Werewolf | USU Personal Contest 2003 | 2219 | 205 |
| 1207 | Median on the Plane | USU Local Contest. March 2002 | 2180 | 206 |
| 1869 | New Year Cruise | Ural FU Championship 2011 | 1253 | 207 |
| 1208 | Legendary Teams Contest | USU Local Contest. March 2002 | 2130 | 210 |
| 1249 | Ancient Necropolis | USU Local Contest. March 2003 | 2134 | 213 |
| 1491 | Unreal Story | Autumn School Contest 2006 | 2012 | 213 |
| 1515 | Cashmaster | Timus Top Coders: Third Challenge | 1985 | 213 |
| 1590 | Bacon’s Cipher | NEERC 2007 Eastern Subregional | 1817 | 215 |
| 1333 | Genie Bomber 2 | Autumn School Contest 2004 | 2152 | 216 |
| 1002 | Phone Numbers | Central European Olympiad in Informatics 1999 | 6382 | 217 |
| 1355 | Bald Spot Revisited | Spring School Contest 2005 | 2152 | 217 |
| 1303 | Minimal Coverage | Ural Championship 1998 | 2113 | 219 |
| 2095 | Scrum | Ural FU Personal Contest 2014 | 581 | 221 |
| 2105 | Alice and Bob are on Bikes | Ural FU Junior Championship 2016 | 538 | 221 |
| 1726 | Visits | Ural Regional School Programming Contest 2009 | 1439 | 223 |
| 1125 | Hopscotch | USU Championship 2001 | 1973 | 226 |
| 1204 | Idempotents | USU Local Contest. March 2002 | 1979 | 226 |
| 1052 | Rabbit Hunt | USU Local Contest. March 2000 | 5942 | 227 |
| 1033 | Labyrinth | Ural Championship 1999 | 5989 | 230 |
| 2019 | Pair: normal and paranormal | NEERC 2014 Eastern Subregional | 755 | 230 |
| 1205 | By the Underground or by Foot? | USU Local Contest. March 2002 | 1928 | 232 |
| 1737 | Mnemonics and Palindromes 3 | USU Championship 2009 | 1381 | 232 |
| 1795 | Husband in a Shop | Ural Regional School Programming Contest 2010 | 1241 | 233 |
| 1521 | War Games 2 | Timus Top Coders: Third Challenge | 1801 | 234 |
| 1011 | Conductors | USU Championship 1997 | 5886 | 235 |
| 1247 | Check a Sequence | USU Personal Contest 2003 | 1915 | 237 |
| 1122 | Game | Autumn School Contest 2001 | 1871 | 238 |
| 2098 | Lada Priora | Ural FU Personal Contest 2014 | 539 | 238 |
| 1658 | Sum of Digits | NEERC 2008 Eastern Subregional | 1479 | 239 |
| 2065 | Different Sums | Ural Regional School Programming Contest 2015 | 614 | 239 |
| 1049 | Brave Balloonists | USU Local Contest. March 2000 | 5613 | 240 |
| 1385 | Interesting Number | Petrozavodsk Summer 2005. Moscow+Ural Contest | 1954 | 240 |
| 1150 | Page Numbers | Ural Championship 2001. Round 2 | 1851 | 241 |
| 1080 | Map Coloring | Winter Mathematical Festival Varna 2001 | 5065 | 242 |
| 1191 | Catch the thief! | Spring School Contest 2002 | 1848 | 242 |
| 2015 | Zhenya moves from the dormitory | NEERC 2014 Eastern Subregional | 715 | 243 |
| 1108 | Heritage | Bulgarian Online Contest September 2001 | 1815 | 245 |
| 1109 | Conference | Bulgarian Online Contest September 2001 | 1811 | 245 |
| 1603 | Erudite | USU Personal Contest 2008 | 1515 | 249 |
| 2141 | Sasha Vilkin | Ural School Programming Contest 2019 | 191 | 249 |
| 1200 | Horns and Hoofs | USU Local Contest. March 2002 | 1793 | 250 |
| 1748 | The Most Complex Number | Petrozavodsk Summer 2009. Ufa SATU Contest | 1235 | 253 |
| 2067 | Friends and Berries | Ural Regional School Programming Contest 2015 | 580 | 253 |
| 1195 | Ouths and Crosses | Spring School Contest 2002 | 1760 | 254 |
| 1433 | Diamonds | USU Personal Contest 2006 | 1789 | 254 |
| 1470 | UFOs | Petrozavodsk Summer 2006. Ural+Orel Contest | 1699 | 254 |
| 1298 | Knight | Spring School Contest 2004 | 1797 | 257 |
| 2034 | Caravans | Ural Regional School Programming Contest 2014 | 673 | 257 |
| 1081 | Binary Lexicographic Sequence | Winter Mathematical Festival Varna 2001 | 4750 | 258 |
| 1450 | Russian Pipelines | Timus Top Coders: Second Challenge | 1737 | 258 |
| 1113 | Jeep | Bulgarian Online Contest September 2001 | 1717 | 259 |
| 1528 | Sequence | Petrozavodsk Winter 2007. D.Gozman Contest | 1601 | 259 |
| 1684 | Jack's Last Word | USU Personal Contest 2009 | 1323 | 259 |
| 1244 | Gentlemen | USU Personal Contest 2003 | 1747 | 260 |
| 1028 | Stars | Ural Championship 1999 | 5258 | 261 |
| 2144 | Cleaning the Room | Ural School Programming Contest 2019 | 180 | 263 |
| 1501 | Sense of Beauty | NEERC 2006 Eastern Subregional | 1603 | 266 |
| 1604 | Country of Fools | USU Personal Contest 2008 | 1410 | 267 |
| 1255 | Graveyard of the Cosa Nostra | USU Local Contest. March 2003 | 1695 | 268 |
| 2024 | Adventure Time | Ural Regional School Programming Contest 2014 | 641 | 269 |
| 1889 | Airport Announcements | NEERC 2011 Eastern Subregional | 952 | 270 |
| 1117 | Hierarchy | Autumn School Contest 2001 | 1639 | 271 |
| 1741 | Communication Fiend | USU Championship 2009 | 1182 | 271 |
| 1922 | Superhero Team | Ural Regional School Programming Contest 2012 | 838 | 272 |
| 1010 | Discrete Function | USTU PhysTech Cup 2000 | 5065 | 273 |
| 1220 | Stacks | USU Championship 2002 | 1654 | 273 |
| 1160 | Network | NEERC 2001 Northern Subregional | 1645 | 275 |
| 1826 | Minefield | USU Personal Contest 2011 | 995 | 277 |
| 1087 | The Time to Take Stones | Spring School Contest 2001 | 4353 | 279 |
| 1718 | Rejudge | NEERC 2009 Eastern Subregional | 1153 | 279 |
| 1179 | Numbers in Text | USU Personal Contest 2002 | 1592 | 281 |
| 1537 | Ents | USU Personal Contest 2007 | 1474 | 281 |
| 1517 | Freedom of Choice | Timus Top Coders: Third Challenge | 1488 | 283 |
| 2104 | Game with a Strip | Ural FU Junior Championship 2016 | 415 | 285 |
| 1018 | Binary Apple Tree | USU Local Contest. 1999 | 4798 | 288 |
| 1377 | Lara Croft | Ural Championship 2005. Round 1 | 1616 | 290 |
| 1184 | Cable Master | NEERC 2001 | 1530 | 292 |
| 1137 | Bus Routes | NEERC 2001 Central Subregional | 1514 | 294 |
| 1497 | Cutting a Square | Autumn School Contest 2006 | 1457 | 294 |
| 1989 | Subpalindromes | Ural FU Championship 2013 | 680 | 294 |
| 1036 | Lucky Tickets | | 4649 | 296 |
| 1153 | Supercomputer | Ural Championship 2001. Round 2 | 1500 | 297 |
| 1032 | Find a Multiple | Ural Championship 1999 | 4020 | 298 |
| 1215 | Exactness of Projectile Hit | Autumn School Contest 2002 | 1515 | 298 |
| 1742 | Team building | Petrozavodsk Summer 2009. Ufa SATU Contest | 1049 | 298 |
| 1047 | Simple Calculations | USU Local Contest. March 2000 | 4496 | 299 |
| 1551 | Sumo Tournament | Ural Championship 2007 | 1367 | 299 |
| 1779 | The Great Team | Ural SU Championship 2010 | 967 | 299 |
| 2003 | Simple Magic | Ural Regional School Programming Contest 2013 | 663 | 299 |
| 1320 | Graph Decomposition | Ural Championship 2004. Round 2 | 1534 | 301 |
| 1346 | Intervals of Monotonicity | USU Championship 2004 | 1549 | 301 |
| 1024 | Permutations | Autumn School Contest 2000 | 4564 | 302 |
| 1998 | The old Padawan | NEERC 2013 Eastern Subregional | 660 | 302 |
| 1190 | Bar of Chocolate | Spring School Contest 2002 | 1476 | 303 |
| 1124 | Mosaic | USU Championship 2001 | 1460 | 304 |
| 1753 | Bookshelf | USU Personal Contest 2010 | 1012 | 304 |
| 1823 | Ideal Gas | USU Personal Contest 2011 | 899 | 307 |
| 1185 | Wall | NEERC 2001 | 1452 | 308 |
| 1294 | Mars Satellites | Spring School Contest 2004 | 1495 | 308 |
| 1227 | Rally Championship | NEERC 2002 Central Subregional | 1463 | 309 |
| 2145 | Olympiad for Everyone | Ural School Programming Contest 2019 | 152 | 309 |
| 1523 | K-inversions | Petrozavodsk Winter 2007. D.Gozman Contest | 1327 | 312 |
| 1127 | Colored Bricks | USU Championship 2001 | 1421 | 313 |
| 1588 | Jamaica | NEERC 2007 Eastern Subregional | 1240 | 314 |
| 1934 | Black Spot | Ural FU Championship 2012 | 722 | 314 |
| 1752 | Tree 2 | Petrozavodsk Summer 2009. Ufa SATU Contest | 985 | 317 |
| 2062 | Ambitious Experiment | Ural Regional School Programming Contest 2015 | 461 | 317 |
| 1053 | Pinocchio | NEERC 2000 Central Subregional | 4221 | 318 |
| 1116 | Piecewise Constant Function | Autumn School Contest 2001 | 1393 | 319 |
| 1223 | Chernobyl’ Eagle on a Roof | USU Championship 2002 | 1415 | 319 |
| 1553 | Caves and Tunnels | Petrozavodsk Summer 2007. NSU Contest | 1231 | 319 |
| 1929 | Teddybears are not for Everyone | Ural Regional School Programming Contest 2012 | 709 | 321 |
| 1211 | Collective Guarantee | Autumn School Contest 2002 | 1396 | 323 |
| 1218 | Episode N-th: The Jedi Tournament | USU Championship 2002 | 1385 | 326 |
| 2113 | Survive the flood | University academic school olympiad in informatics 2019 | 181 | 328 |
| 1156 | Two Rounds | Ural Championship 2001. Round 2 | 1341 | 332 |
| 1302 | Delta-wave | Ural Championship 1998 | 1378 | 334 |
| 1873 | GOV Chronicles | Ural Regional School Programming Contest 2011 | 767 | 336 |
| 1282 | Game Tree | NEERC 2003 Central Subregional | 1361 | 337 |
| 1029 | Ministry | Ural Championship 1999 | 3536 | 338 |
| 1121 | Branches | Autumn School Contest 2001 | 1314 | 338 |
| 1246 | Tethered Dog | USU Personal Contest 2003 | 1341 | 338 |
| 1261 | Tips | Autumn School Contest 2003 | 1356 | 338 |
| 1406 | Next Number | Autumn School Contest 2005 | 1384 | 338 |
| 2078 | Bowling game | Ural Championship 2016 | 384 | 338 |
| 1495 | One-two, One-two 2 | Autumn School Contest 2006 | 1260 | 340 |
| 1992 | CVS | NEERC 2013 Eastern Subregional | 586 | 340 |
| 1008 | Image Encoding | USTU PhysTech Cup 2000 | 4028 | 344 |
| 1933 | Guns for Battle! | Ural FU Championship 2012 | 653 | 346 |
| 1090 | In the Army Now | USU Local Contest. March 2001 | 3314 | 347 |
| 1651 | Shortest Subchain | NEERC 2008 Eastern Subregional | 1015 | 347 |
| 1793 | Tray 2 | Ural Regional School Programming Contest 2010 | 828 | 348 |
| 1201 | Which Day Is It? | USU Local Contest. March 2002 | 1280 | 349 |
| 1356 | Something Easier | Spring School Contest 2005 | 1334 | 349 |
| 1692 | Flags for Provinces | Petrozavodsk Winter 2009. USU Contest | 974 | 349 |
| 2108 | Oleg and Little Ponies | Ural FU Junior Championship 2016 | 336 | 351 |
| 1981 | Parallel and Perpendicular | Ural FU Championship 2013 | 567 | 352 |
| 1431 | Diplomas | USU Personal Contest 2006 | 1282 | 353 |
| 1060 | Flip Game | NEERC 2000 | 3561 | 357 |
| 1574 | Mathematicians and brackets | Autumn School Contest 2007 | 1092 | 357 |
| 1648 | Yachts | Autumn School Contest 2008 | 986 | 358 |
| 1804 | The Machinegunners in a Playoff | NEERC 2010 Eastern Subregional | 802 | 358 |
| 1176 | Hyperchannels | USU Personal Contest 2002 | 1242 | 359 |
| 2021 | Scarily interesting! | NEERC 2014 Eastern Subregional | 479 | 361 |
| 1403 | Courier | Autumn School Contest 2005 | 1288 | 363 |
| 1141 | RSA Attack | | 1218 | 365 |
| 1427 | SMS | Timus Top Coders: First Challenge | 1246 | 365 |
| 1292 | Mars Space Stations | Spring School Contest 2004 | 1258 | 366 |
| 1031 | Railway Tickets | Ural Championship 1999 | 3733 | 368 |
| 1140 | Swamp Incident | NEERC 2001 Central Subregional | 1206 | 368 |
| 1483 | Table Football | USU Championship 2006 | 1161 | 369 |
| 1078 | Segments | Winter Mathematical Festival Varna 2001 | 3304 | 370 |
| 1941 | Scary Martian Word | Ural FU Personal Contest 2012 | 599 | 370 |
| 1039 | Anniversary Party | USU Championship 2000 | 3632 | 375 |
| 1287 | Mars Canals | USU Personal Contest 2004 | 1226 | 375 |
| 1262 | Pseudo-Roman Number | Autumn School Contest 2003 | 1215 | 376 |
| 1513 | Lemon Tale | Timus Top Coders: Third Challenge | 1110 | 379 |
| 1003 | Parity | Central European Olympiad in Informatics 1999 | 3637 | 381 |
| 1007 | Code Words | USU Championship 1997 | 3630 | 381 |
| 1407 | One-two, One-two | Autumn School Contest 2005 | 1222 | 383 |
| 1229 | Strong Brickwork | NEERC 2002 Central Subregional | 1168 | 386 |
| 1145 | Rope in the Labyrinth | DSAP Vietnam Online Contest November 2001 | 1149 | 387 |
| 1259 | How to Become Star? | Autumn School Contest 2003 | 1178 | 388 |
| 1289 | One Way Ticket | USU Personal Contest 2004 | 1185 | 388 |
| 1628 | White Streaks | USU Championship 2008 | 909 | 390 |
| 1350 | Canteen | Spring School Contest 2005 | 1192 | 391 |
| 1854 | Negotiations with Parthians | Petrozavodsk Summer 2011. Ural SU Team.GOV Contest | 661 | 392 |
| 1155 | Troubleduons | Ural Championship 2001. Round 2 | 1130 | 393 |
| 1489 | Points on a Parallelepiped | Autumn School Contest 2006 | 1087 | 393 |
| 1111 | Squares | Bulgarian Online Contest September 2001 | 1123 | 394 |
| 1410 | Crack | USU Championship 2005 | 1181 | 395 |
| 2046 | The First Day at School | Ural Championship 2015 | 398 | 396 |
| 2063 | Black and White | Ural Regional School Programming Contest 2015 | 367 | 396 |
| 1055 | Combinations | NEERC 2000 Central Subregional | 3378 | 397 |
| 1904 | The Lessons of the Past | Ural Championship 2012 | 572 | 398 |
| 1291 | Gear-wheels | Spring School Contest 2004 | 1151 | 399 |
| 1077 | Travelling Tours | | 1101 | 402 |
| 2109 | Tourism on Mars | Ural FU Junior Championship 2016 | 292 | 402 |
| 2047 | Maths | Ural Championship 2015 | 390 | 403 |
| 1252 | Sorting the Tombstones | USU Local Contest. March 2003 | 1123 | 404 |
| 1217 | Unlucky Tickets | USU Championship 2002 | 1111 | 406 |
| 1562 | GM-pineapple | USU Championship 2007 | 959 | 407 |
| 1162 | Currency Exchange | NEERC 2001 Northern Subregional | 1089 | 408 |
| 1115 | Ships | Bulgarian Online Contest September 2001 | 1081 | 410 |
| 1665 | Dean's Financial Pyramid | Petrozavodsk Winter 2008. USU Contest | 843 | 412 |
| 1401 | Gamers | Autumn School Contest 2005 | 1131 | 413 |
| 1416 | Confidential | USU Championship 2005 | 1124 | 414 |
| 1128 | Partition into Groups | USU Championship 2001 | 1065 | 416 |
| 2027 | URCAPL, Episode 1 | Ural Regional School Programming Contest 2014 | 411 | 416 |
| 1107 | Warehouse Problem | Tetrahedron Team Online Contest May 2001 | 1057 | 417 |
| 1258 | Pool | Autumn School Contest 2003 | 1095 | 417 |
| 1828 | Approximation by a Progression | USU Personal Contest 2011 | 658 | 417 |
| 1221 | Malevich Strikes Back! | USU Championship 2002 | 1077 | 418 |
| 1279 | Warehouse | NEERC 2003 Central Subregional | 1091 | 419 |
| 1888 | Pilot Work Experience | NEERC 2011 Eastern Subregional | 611 | 419 |
| 1759 | Long-Livers | USU Personal Contest 2010 | 729 | 421 |
| 1783 | Nuclear Arms Race | Ural SU Championship 2010 | 682 | 423 |
| 2030 | Awesome Backup System | Ural Regional School Programming Contest 2014 | 404 | 423 |
| 1860 | Fiborial | Petrozavodsk Summer 2011. Ural SU Team.GOV Contest | 610 | 424 |
| 1015 | Test the Difference! | USU Local Contest. 1999 | 3246 | 425 |
| 1650 | Billionaires | NEERC 2008 Eastern Subregional | 825 | 426 |
| 1776 | Anniversary Firework | Ural SU Championship 2010 | 676 | 426 |
| 1322 | Spy | Ural Championship 2004. Round 2 | 1074 | 428 |
| 1732 | Ministry of Truth | USU Championship 2009 | 743 | 428 |
| 1326 | Bottle Taps | Ural Championship 2004. Round 2 | 1073 | 429 |
| 1507 | Difficult Decision | NEERC 2006 Eastern Subregional | 992 | 429 |
| 1571 | Interpreters | USU Championship 2007 | 908 | 429 |
| 1602 | Elevator | USU Personal Contest 2008 | 874 | 429 |
| 1519 | Formula 1 | Timus Top Coders: Third Challenge | 976 | 430 |
| 1094 | E-screen | USU Local Contest. March 2001 | 2667 | 431 |
| 1343 | Fairy Tale | USU Championship 2004 | 1071 | 434 |
| 1181 | Cutting a Painted Polygon | USU Personal Contest 2002 | 1025 | 435 |
| 1238 | Folding | NEERC 2002 | 1036 | 436 |
| 1631 | Drunk King 2 | USU Championship 2008 | 812 | 436 |
| 1901 | Space Elevators | Ural Championship 2012 | 522 | 436 |
| 1019 | Line Painting | USU Local Contest. 1999 | 3156 | 437 |
| 1963 | Kite | Ural FU Personal Contest 2013 | 475 | 438 |
| 1316 | Electronic Auction | Ural Championship 2004. Round 1 | 1048 | 439 |
| 1960 | Palindromes and Super Abilities | Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection | 474 | 440 |
| 1774 | Barber of the Army of Mages | Ural SU Championship 2010 | 647 | 445 |
| 1890 | Money out of Thin Air | NEERC 2011 Eastern Subregional | 574 | 445 |
| 1480 | Coupons | USU Championship 2006 | 957 | 447 |
| 1129 | Door Painting | USU Championship 2001 | 985 | 450 |
| 1202 | Rectangles Travel | USU Local Contest. March 2002 | 991 | 450 |
| 2148 | Insane Shot | Ural School Programming Contest 2019 | 101 | 451 |
| 1038 | Spell Checker | USU Championship 2000 | 3008 | 452 |
| 1414 | Astronomical Database | USU Championship 2005 | 1024 | 454 |
| 1997 | Those are not the droids you're looking for | NEERC 2013 Eastern Subregional | 436 | 454 |
| 2117 | Polyphemus' triples | University academic school olympiad in informatics 2019 | 128 | 454 |
| 1089 | Verification with a Vocabulary | Spring School Contest 2001 | 2662 | 455 |
| 1700 | Awakening | Ural Championship 2009 | 741 | 455 |
| 1923 | Scary Politics | Ural Regional School Programming Contest 2012 | 497 | 455 |
| 1643 | Attack of the Dark Fortress | Autumn School Contest 2008 | 771 | 457 |
| 1439 | Battle with You-Know-Who | Ural Championship 2006 | 976 | 460 |
| 2014 | Zhenya moves from parents | NEERC 2014 Eastern Subregional | 372 | 461 |
| 1430 | Crime and Punishment | Timus Top Coders: First Challenge | 979 | 463 |
| 1329 | Galactic History | Autumn School Contest 2004 | 992 | 466 |
| 2045 | Richness of words | Petrozavodsk Summer 2014. Ural FU Dandelion Contest | 361 | 468 |
| 1525 | Path | Petrozavodsk Winter 2007. D.Gozman Contest | 878 | 470 |
| 1641 | Duties | Autumn School Contest 2008 | 748 | 471 |
| 2026 | Dean and Schedule | Ural Regional School Programming Contest 2014 | 362 | 471 |
| 1273 | Tie | USU Championship 2003 | 964 | 474 |
| 1362 | Classmates 2 | Ural Championship 2005. Round 2 | 980 | 475 |
| 1577 | E-mail | Autumn School Contest 2007 | 817 | 476 |
| 1072 | Routing | USU Personal Contest 2001 | 2569 | 480 |
| 1535 | The Hobbit or There and Back Again | USU Personal Contest 2007 | 855 | 481 |
| 1900 | Brainwashing Device | Ural Championship 2012 | 471 | 482 |
| 1428 | Jedi Riddle | Timus Top Coders: First Challenge | 930 | 487 |
| 1995 | Illegal spices | NEERC 2013 Eastern Subregional | 404 | 489 |
| 1579 | Coat Transportation | Autumn School Contest 2007 | 792 | 491 |
| 1051 | Simple Game on a Grid | USU Local Contest. March 2000 | 2728 | 492 |
| 1189 | Pairs of Integers | NEERC 2001 | 905 | 492 |
| 1728 | Curse on Team.GOV | Ural Regional School Programming Contest 2009 | 646 | 494 |
| 1091 | Tmutarakan Exams | USU Local Contest. March 2001 | 2296 | 501 |
| 1103 | Pencils and Circles | Tetrahedron Team Online Contest May 2001 | 874 | 503 |
| 1158 | Censored! | NEERC 2001 Northern Subregional | 882 | 503 |
| 2071 | Juice Cocktails | Ural Regional School Programming Contest 2015 | 287 | 503 |
| 1212 | Battleship | Autumn School Contest 2002 | 891 | 504 |
| 1236 | Decoding Task | NEERC 2002 | 892 | 505 |
| 1465 | Pawn Game | Petrozavodsk Winter 2006. USU Contest | 858 | 505 |
| 1182 | Team Them Up! | NEERC 2001 | 876 | 508 |
| 1045 | Funny Game | USU Local Contest. March 2000 | 2638 | 510 |
| 1437 | Gasoline Station | USU Personal Contest 2006 | 881 | 512 |
| 2146 | Quiz Show | Ural School Programming Contest 2019 | 87 | 516 |
| 1069 | Prufer Code | USU Personal Contest 2001 | 2374 | 520 |
| 1067 | Disk Tree | NEERC 2000 | 2427 | 523 |
| 1198 | Jobbery | | 890 | 524 |
| 1098 | Questions | | 2093 | 525 |
| 1334 | Checkers | Autumn School Contest 2004 | 877 | 527 |
| 1366 | Presents | Ural Championship 2005. Round 2 | 881 | 528 |
| 1806 | Mobile Telegraphs | NEERC 2010 Eastern Subregional | 539 | 529 |
| 1056 | Computer Net | NEERC 2000 Central Subregional | 2522 | 531 |
| 2112 | Battle log | University academic school olympiad in informatics 2019 | 108 | 531 |
| 1351 | Good Gnusmas – Dead Gnusmas | Spring School Contest 2005 | 867 | 535 |
| 1809 | Chapaev and Potatoes | NEERC 2010 Eastern Subregional | 531 | 537 |
| 2099 | Space Invader | Ural FU Personal Contest 2014 | 233 | 537 |
| 2081 | Faulty dial | Ural Championship 2016 | 235 | 543 |
| 1066 | Garland | NEERC 2000 | 2332 | 544 |
| 1682 | Crazy Professor | USU Personal Contest 2009 | 622 | 546 |
| 1421 | Credit Operations | Timus Top Coders: First Challenge | 828 | 547 |
| 1400 | Cellular Characters | Autumn School Contest 2005 | 851 | 548 |
| 1721 | Two Sides of the Same Coin | NEERC 2009 Eastern Subregional | 582 | 548 |
| 1942 | Attack at the Orbit | Ural FU Personal Contest 2012 | 400 | 549 |
| 1871 | Seismic Waves | Ural FU Championship 2011 | 464 | 551 |
| 1095 | Nikifor 3 | USU Local Contest. March 2001 | 2084 | 552 |
| 1600 | Airport | USU Personal Contest 2008 | 678 | 552 |
| 1375 | Bill Clevers | Ural Championship 2005. Round 1 | 838 | 556 |
| 1101 | Robot in the Field | Tetrahedron Team Online Contest May 2001 | 788 | 557 |
| 1325 | Dirt | Ural Championship 2004. Round 2 | 822 | 558 |
| 1534 | Football in Gondor | USU Personal Contest 2007 | 736 | 558 |
| 1172 | Ship Routes | Romanian Online Contest December 2001 | 793 | 559 |
| 1358 | Cables | Spring School Contest 2005 | 826 | 562 |
| 1004 | Sightseeing Trip | Central European Olympiad in Informatics 1999 | 2458 | 563 |
| 2029 | Towers of Hanoi Strike Back | Ural Regional School Programming Contest 2014 | 301 | 564 |
| 1371 | Cargo Agency | Ural Championship 2005. Round 1 | 821 | 567 |
| 2116 | He is not a knight for you | University academic school olympiad in informatics 2019 | 100 | 569 |
| 1143 | Electric Path | DSAP Vietnam Online Contest November 2001 | 774 | 571 |
| 1971 | Graphics Settings | Ural Championship 2013 | 356 | 571 |
| 1448 | Lighting in Hogwarts | Ural Championship 2006 | 782 | 572 |
| 2060 | Subpalindrome pairs | Palindromic Contest | 262 | 575 |
| 1729 | Dead Man's Chest | Ural Regional School Programming Contest 2009 | 551 | 577 |
| 1980 | Road to Investor | Ural Championship 2013 | 351 | 579 |
| 1713 | Key Substrings | NEERC 2009 Eastern Subregional | 548 | 581 |
| 1027 | D++ Again | Autumn School Contest 2000 | 2361 | 583 |
| 1445 | Christmas gifts | Ural Championship 2006 | 766 | 584 |
| 1605 | Devil's Sequence | USU Personal Contest 2008 | 640 | 584 |
| 1754 | Explosion in a Pyramid | USU Personal Contest 2010 | 520 | 586 |
| 1592 | Chinese Watches | NEERC 2007 Eastern Subregional | 657 | 588 |
| 1870 | Zinium 2 | Ural FU Championship 2011 | 433 | 590 |
| 1085 | Meeting | Spring School Contest 2001 | 2039 | 593 |
| 1698 | Square Country 5 | Petrozavodsk Winter 2009. USU Contest | 566 | 597 |
| 1132 | Square Root | | 738 | 599 |
| 1891 | Language Ocean | NEERC 2011 Eastern Subregional | 424 | 599 |
| 1071 | Nikifor 2 | USU Personal Contest 2001 | 2053 | 601 |
| 1920 | Titan Ruins: the Infinite Power of Magic | NEERC 2012 Eastern Subregional | 375 | 601 |
| 1550 | Dean's Pyramid 3 | Ural Championship 2007 | 673 | 602 |
| 1710 | Boris, You Are Wrong! | Ural Championship 2009 | 557 | 603 |
| 1884 | Way to the University | Ural Regional School Programming Contest 2011 | 421 | 605 |
| 2080 | Wallet | Ural Championship 2016 | 209 | 607 |
| 1389 | Roadworks | Petrozavodsk Summer 2005. Moscow+Ural Contest | 765 | 608 |
| 1701 | Ostap and Partners | Ural Championship 2009 | 551 | 609 |
| 1690 | Army of Mages | Petrozavodsk Winter 2009. USU Contest | 553 | 610 |
| 1064 | Binary Search | NEERC 2000 | 2074 | 612 |
| 1659 | Regular Triangles | NEERC 2008 Eastern Subregional | 571 | 613 |
| 1061 | Buffer Manager | NEERC 2000 | 2065 | 614 |
| 1760 | Infernal Work | USU Personal Contest 2010 | 494 | 617 |
| 1706 | Cipher Message 2 | Ural Championship 2009 | 542 | 619 |
| 1452 | Pascal vs. C++ | Timus Top Coders: Second Challenge | 716 | 620 |
| 2004 | Scientists from Spilkovo | Ural Regional School Programming Contest 2013 | 315 | 620 |
| 1070 | Local Time | USU Personal Contest 2001 | 1978 | 623 |
| 1309 | Dispute | Ural Championship 2004. Round 1 | 735 | 623 |
| 1463 | Happiness to People! | Petrozavodsk Winter 2006. USU Contest | 688 | 627 |
| 1314 | Chase in Subway | Ural Championship 2004. Round 1 | 729 | 628 |
| 2032 | Conspiracy Theory and Rebranding | Ural Regional School Programming Contest 2014 | 269 | 628 |
| 1332 | Genie Bomber | Autumn School Contest 2004 | 733 | 629 |
| 1822 | Hugo II's War | USU Personal Contest 2011 | 433 | 629 |
| 1966 | Cycling Roads | Ural FU Personal Contest 2013 | 327 | 630 |
| 1059 | Expression | NEERC 2000 Central Subregional | 2120 | 632 |
| 1554 | Multiplicative Functions | Petrozavodsk Summer 2007. NSU Contest | 616 | 632 |
| 1500 | Pass Licenses | NEERC 2006 Eastern Subregional | 669 | 633 |
| 1724 | Origin of Man Clarified | Ural Regional School Programming Contest 2009 | 497 | 639 |
| 1542 | Autocompletion | Ural Championship 2007 | 633 | 640 |
| 1248 | Sequence Sum | USU Personal Contest 2003 | 693 | 650 |
| 1254 | Die Hard | USU Local Contest. March 2003 | 694 | 650 |
| 1054 | Hanoi Tower | NEERC 2000 Central Subregional | 2054 | 652 |
| 1803 | The Czechs' Rifles | NEERC 2010 Eastern Subregional | 435 | 653 |
| 2143 | Victoria! | Ural School Programming Contest 2019 | 66 | 658 |
| 1928 | Another Ecology Problem | Ural Regional School Programming Contest 2012 | 340 | 659 |
| 1767 | The House of Doctor Dee | Ural Championship 2010 | 456 | 661 |
| 1443 | Rails | Ural Championship 2006 | 675 | 662 |
| 1838 | Samurai's Stroke | Ural Championship 2011 | 406 | 662 |
| 1234 | Bricks | NEERC 2002 | 672 | 668 |
| 1564 | Counting Ones | USU Championship 2007 | 579 | 669 |
| 1866 | Poetic Foot | Ural FU Championship 2011 | 380 | 670 |
| 1076 | Trash | | 1824 | 672 |
| 1619 | Big Brother | Petrozavodsk Winter 2008. ITMO Contest | 530 | 673 |
| 2130 | Alice + Bob | Later is better than never | 72 | 676 |
| 1484 | Film Rating | USU Championship 2006 | 628 | 677 |
| 2121 | Intersection of Parabolas | Petrozavodsk Summer 2018. t.me/umnik_team Contest | 79 | 678 |
| 1286 | Starship Travel | USU Personal Contest 2004 | 672 | 680 |
| 1253 | Necrologues | USU Local Contest. March 2003 | 662 | 681 |
| 2028 | URCAPL, Episode 2 | Ural Regional School Programming Contest 2014 | 247 | 682 |
| 1174 | Weird Permutations | Romanian Online Contest December 2001 | 646 | 684 |
| 1186 | Chemical Reactions | NEERC 2001 | 646 | 686 |
| 1096 | Get the Right Route Plate! | USU Local Contest. March 2001 | 1669 | 688 |
| 1274 | Fractional Arithmetic | NEERC 2003 Central Subregional | 660 | 689 |
| 1606 | Slalom | USU Personal Contest 2008 | 541 | 689 |
| 1962 | In Chinese Restaurant | Ural FU Personal Contest 2013 | 298 | 689 |
| 1440 | Training Schedule | Ural Championship 2006 | 645 | 692 |
| 2009 | Canteen Line | Ural Regional School Programming Contest 2013 | 280 | 695 |
| 2048 | History | Ural Championship 2015 | 222 | 696 |
| 1772 | Ski-Trails for Robots | Ural Championship 2010 | 432 | 697 |
| 2040 | Palindromes and Super Abilities 2 | Petrozavodsk Summer 2014. Ural FU Dandelion Contest | 239 | 698 |
| 1872 | Spacious Office | Ural FU Championship 2011 | 364 | 699 |
| 1474 | About Frogs | Petrozavodsk Summer 2006. Ural+Orel Contest | 609 | 700 |
| 1379 | Cups Transportation | Ural Championship 2005. Round 1 | 662 | 702 |
| 1057 | Amount of Degrees | NEERC 2000 Central Subregional | 1904 | 703 |
| 1611 | Decimation | Ural Championship 2008 | 525 | 704 |
| 1088 | Ilya Murometz | Spring School Contest 2001 | 1709 | 707 |
| 1305 | Convex Hull | Ural Championship 1998 | 643 | 711 |
| 1405 | Goat in the Garden 5 | Autumn School Contest 2005 | 653 | 711 |
| 1250 | Sea Burial | USU Local Contest. March 2003 | 631 | 713 |
| 1939 | First Seal | Ural FU Championship 2012 | 311 | 716 |
| 1168 | Radio Stations | Romanian Online Contest December 2001 | 614 | 719 |
| 1633 | Hippogriffs | USU Championship 2008 | 488 | 719 |
| 1940 | Not So Simple Years | Ural FU Championship 2012 | 308 | 722 |
| 1169 | Pairs | Romanian Online Contest December 2001 | 608 | 726 |
| 1159 | Fence | NEERC 2001 Northern Subregional | 606 | 728 |
| 2114 | My craft | University academic school olympiad in informatics 2019 | 76 | 728 |
| 1593 | Square Country. Version 2 | | 466 | 729 |
| 2074 | Timus problems classifier | Qualification of Eastern Subregional 2015 | 182 | 731 |
| 1424 | Minibus | Timus Top Coders: First Challenge | 614 | 734 |
| 1230 | Introspective Program | NEERC 2002 Central Subregional | 607 | 737 |
| 1301 | Cube in Labyrinth | Ural Championship 1998 | 617 | 740 |
| 1486 | Equal Squares | USU Championship 2006 | 574 | 740 |
| 2064 | Caterpillars | Ural Regional School Programming Contest 2015 | 191 | 743 |
| 2089 | Experienced coach | Ural Championship 2016 | 169 | 743 |
| 1943 | Space Rummy | Ural FU Personal Contest 2012 | 290 | 751 |
| 1961 | Cantonese Dialect | Ural FU Personal Contest 2013 | 272 | 753 |
| 1268 | Little Chu | USU Championship 2003 | 602 | 754 |
| 1773 | Metro to Every Home | Ural Championship 2010 | 399 | 754 |
| 1755 | Cake | USU Personal Contest 2010 | 401 | 756 |
| 1392 | Dreaming of Stars | | 613 | 757 |
| 1456 | Jedi Riddle 2 | Timus Top Coders: Second Challenge | 585 | 757 |
| 1037 | Memory Management | USU Championship 2000 | 1790 | 758 |
| 1235 | Cricket Field | NEERC 2002 | 591 | 758 |
| 1892 | Morning in Koltsovo | NEERC 2011 Eastern Subregional | 331 | 763 |
| 2013 | Neither shaken nor stirred | NEERC 2014 Eastern Subregional | 221 | 763 |
| 1034 | Queens in Peaceful Positions | Ural Championship 1999 | 1790 | 765 |
| 1716 | Alternative Solution | NEERC 2009 Eastern Subregional | 413 | 767 |
| 1016 | Cube on the Walk | USU Local Contest. 1999 | 1777 | 774 |
| 1903 | Unidentified Ships | Ural Championship 2012 | 288 | 778 |
| 2106 | Deserialization | Ural FU Junior Championship 2016 | 146 | 778 |
| 1629 | Trip | USU Championship 2008 | 449 | 780 |
| 1647 | Divide an Island! | Autumn School Contest 2008 | 447 | 781 |
| 1276 | Train | NEERC 2003 Central Subregional | 578 | 785 |
| 1277 | Cops and Thieves | NEERC 2003 Central Subregional | 578 | 785 |
| 1342 | Enterprise | USU Championship 2004 | 586 | 787 |
| 1587 | Flying Pig | NEERC 2007 Eastern Subregional | 487 | 789 |
| 1614 | National Project “Trams” | Ural Championship 2008 | 467 | 790 |
| 1042 | Central Heating | USU Championship 2000 | 1700 | 798 |
| 1147 | Shaping Regions | DSAP Vietnam Online Contest November 2001 | 548 | 803 |
| 1918 | Titan Ruins: Artful Manipulations | NEERC 2012 Eastern Subregional | 278 | 803 |
| 2128 | Rubina's Solitaire | Later is better than never | 59 | 803 |
| 1825 | Ifrit Bomber 2 | USU Personal Contest 2011 | 334 | 810 |
| 1646 | Godzilla Strikes Back! | Autumn School Contest 2008 | 428 | 814 |
| 1512 | Zinium | Timus Top Coders: Third Challenge | 511 | 815 |
| 1780 | Gray Code | Ural SU Championship 2010 | 349 | 815 |
| 1323 | Classmates | Ural Championship 2004. Round 2 | 558 | 818 |
| 2110 | Remove or Maximize | Ural FU Junior Championship 2016 | 138 | 820 |
| 1547 | Password Search | Ural Championship 2007 | 491 | 821 |
| 1558 | Periodical Numbers | Petrozavodsk Summer 2007. NSU Contest | 472 | 821 |
| 1775 | Space Bowling | Ural SU Championship 2010 | 345 | 824 |
| 1830 | Help in the RNOS | Ural Championship 2011 | 324 | 824 |
| 1832 | Arirang Show | Ural Championship 2011 | 324 | 824 |
| 1105 | Observers Coloring | Tetrahedron Team Online Contest May 2001 | 528 | 826 |
| 2135 | Pauline and commits | Later is better than never | 57 | 827 |
| 1932 | The Secret of Identifier | Ural FU Championship 2012 | 267 | 829 |
| 1468 | Fraction | Petrozavodsk Summer 2006. Ural+Orel Contest | 511 | 832 |
| 1030 | Titanic | Ural Championship 1999 | 1641 | 834 |
| 1990 | Podracing | NEERC 2013 Eastern Subregional | 232 | 837 |
| 1436 | Billboard | USU Personal Contest 2006 | 534 | 839 |
| 1269 | Obscene Words Filter | USU Championship 2003 | 532 | 851 |
| 1689 | Fisherman and Barbell | USU Personal Contest 2009 | 395 | 852 |
| 1705 | Gangster Hares | Ural Championship 2009 | 390 | 854 |
| 1373 | Pictura ex Machina | Ural Championship 2005. Round 1 | 541 | 856 |
| 1498 | Stroke at Full Speed | Autumn School Contest 2006 | 494 | 856 |
| 1444 | Elephpotamus | Ural Championship 2006 | 518 | 858 |
| 1875 | Angry Birds | Ural Regional School Programming Contest 2011 | 294 | 858 |
| 1462 | Uncle Scrooge's Gold | Petrozavodsk Winter 2006. USU Contest | 499 | 860 |
| 1994 | The Emperor's plan | NEERC 2013 Eastern Subregional | 223 | 869 |
| 1696 | Salary for Robots | Petrozavodsk Winter 2009. USU Contest | 384 | 872 |
| 2008 | Swifty | Ural Regional School Programming Contest 2013 | 221 | 872 |
| 2140 | BitMazeCraft | Ural School Programming Contest 2019 | 47 | 877 |
| 1580 | Dean's Debts | Autumn School Contest 2007 | 437 | 880 |
| 1154 | Mages Contest | Ural Championship 2001. Round 2 | 498 | 883 |
| 1926 | The Tournament of Intelligences | Ural Regional School Programming Contest 2012 | 251 | 884 |
| 1530 | Ones and Zeroes | Petrozavodsk Winter 2007. D.Gozman Contest | 462 | 885 |
| 1165 | Subnumber | NEERC 2001 Northern Subregional | 496 | 886 |
| 1422 | Fireflies | Timus Top Coders: First Challenge | 507 | 886 |
| 1738 | Computer Security | USU Championship 2009 | 353 | 888 |
| 1912 | Titan Ruins: Passing through Walls | NEERC 2012 Eastern Subregional | 250 | 890 |
| 1805 | Chapaev and a Cipher Grille | NEERC 2010 Eastern Subregional | 316 | 892 |
| 1745 | Yet Another Answer | Petrozavodsk Summer 2009. Ufa SATU Contest | 343 | 893 |
| 1398 | Bishop and Pawn | | 463 | 894 |
| 1743 | Domino Sorting | Petrozavodsk Summer 2009. Ufa SATU Contest | 342 | 895 |
| 1578 | Mammoth Hunt | Autumn School Contest 2007 | 427 | 900 |
| 1959 | GOV-internship 3 | Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection | 226 | 901 |
| 1720 | Summit Online Judge | NEERC 2009 Eastern Subregional | 346 | 911 |
| 1418 | Military Story | USU Championship 2005 | 503 | 916 |
| 1006 | Square Frames | USU Championship 1997 | 1502 | 918 |
| 1575 | Yekaterinburg Subway 2 | Autumn School Contest 2007 | 418 | 919 |
| 2092 | Bolero | Ural FU Personal Contest 2014 | 132 | 919 |
| 1861 | Graveyard in Deyja | Petrozavodsk Summer 2011. Ural SU Team.GOV Contest | 276 | 920 |
| 1339 | Babies | USU Championship 2004 | 499 | 922 |
| 1245 | Pictures | USU Personal Contest 2003 | 482 | 929 |
| 1546 | Japanese Sorting | Ural Championship 2007 | 427 | 941 |
| 1896 | War Games 2.1 | | 134 | 942 |
| 1233 | Amusing Numbers | NEERC 2002 | 470 | 949 |
| 1817 | Merry-go-round | Petrozavodsk Summer 2010. Tavrida NU Contest | 288 | 949 |
| 1324 | Extra Spaces | Ural Championship 2004. Round 2 | 478 | 952 |
| 1630 | Talisman | USU Championship 2008 | 366 | 952 |
| 1175 | Strange Sequence | USU Personal Contest 2002 | 462 | 953 |
| 1237 | Evacuation Plan | NEERC 2002 | 467 | 956 |
| 1986 | Paul’s Salads | Ural FU Championship 2013 | 201 | 962 |
| 1715 | Another Ball Killer | NEERC 2009 Eastern Subregional | 327 | 963 |
| 1974 | Similar Tunes | Ural Championship 2013 | 207 | 963 |
| 1988 | Planet Ocean Landing | Ural FU Championship 2013 | 200 | 967 |
| 1364 | LaraKiller | Ural Championship 2005. Round 2 | 475 | 969 |
| 1863 | Peaceful Atom | Ural FU Championship 2011 | 259 | 971 |
| 1927 | Herbs and Magic | Ural Regional School Programming Contest 2012 | 227 | 974 |
| 1435 | Financial Error | USU Personal Contest 2006 | 456 | 979 |
| 1130 | Nikifor's Walk | USU Championship 2001 | 446 | 981 |
| 1040 | Airline Company | USU Championship 2000 | 1377 | 984 |
| 1560 | Elementary Symmetric Functions | Petrozavodsk Summer 2007. NSU Contest | 392 | 984 |
| 1608 | Lucky Tickets 2008 | Ural Championship 2008 | 373 | 984 |
| 1625 | Hankel Matrix | Petrozavodsk Winter 2008. ITMO Contest | 359 | 985 |
| 2037 | Richness of binary words | Petrozavodsk Summer 2014. Ural FU Dandelion Contest | 165 | 993 |
| 1451 | Beerhouse Tale | Timus Top Coders: Second Challenge | 443 | 994 |
| 1331 | Vladislava | Autumn School Contest 2004 | 459 | 996 |
| 1278 | “… Connecting People” | NEERC 2003 Central Subregional | 453 | 997 |
| 1679 | Scrooge's Tower | Petrozavodsk Summer 2008. USU Contest | 340 | 999 |
| 1824 | Ifrit Bomber | USU Personal Contest 2011 | 269 | 999 |
| 1761 | Binary Palindrome | USU Personal Contest 2010 | 300 | 1002 |
| 1591 | Abstract Thinking | NEERC 2007 Eastern Subregional | 378 | 1011 |
| 1936 | Roshambo | Ural FU Championship 2012 | 217 | 1012 |
| 1461 | Christmas Garland | Petrozavodsk Winter 2006. USU Contest | 422 | 1014 |
| 1996 | Cipher Message 3 | NEERC 2013 Eastern Subregional | 189 | 1018 |
| 1905 | Travel in Time | Ural Championship 2012 | 217 | 1022 |
| 1569 | Networking the “Iset” | USU Championship 2007 | 375 | 1024 |
| 1836 | Babel Fish | Ural Championship 2011 | 258 | 1027 |
| 1570 | Eating High | USU Championship 2007 | 372 | 1032 |
| 1447 | Portkey Network | Ural Championship 2006 | 426 | 1039 |
| 2119 | Tree Hull | Petrozavodsk Summer 2018. t.me/umnik_team Contest | 48 | 1041 |
| 1434 | Buses in Vasyuki | USU Personal Contest 2006 | 428 | 1042 |
| 2103 | Corporate Mail | Ural FU Junior Championship 2016 | 106 | 1046 |
| 1151 | Radiobeacons | Ural Championship 2001. Round 2 | 417 | 1050 |
| 1699 | Turning Turtles | Petrozavodsk Winter 2009. USU Contest | 316 | 1054 |
| 1173 | Lazy Snail | Romanian Online Contest December 2001 | 415 | 1055 |
| 1970 | 皇后像廣場 | Ural FU Personal Contest 2013 | 191 | 1056 |
| 1827 | Indigenous Wars | USU Personal Contest 2011 | 253 | 1060 |
| 1965 | Pear Trees | Ural FU Personal Contest 2013 | 190 | 1061 |
| 1730 | ManBearPig | Ural Regional School Programming Contest 2009 | 295 | 1062 |
| 1539 | Intelligence Data | USU Personal Contest 2007 | 380 | 1068 |
| 1518 | Jedi Riddle 3 | Timus Top Coders: Third Challenge | 386 | 1072 |
| 1883 | Ent's Birthday | Ural Regional School Programming Contest 2011 | 232 | 1077 |
| 1627 | Join | Petrozavodsk Winter 2008. ITMO Contest | 327 | 1078 |
| 1533 | Fat Hobbits | USU Personal Contest 2007 | 374 | 1084 |
| 1317 | Hail | Ural Championship 2004. Round 2 | 415 | 1093 |
| 1469 | No Smoking! | Petrozavodsk Summer 2006. Ural+Orel Contest | 385 | 1097 |
| 2017 | Best of a bad lot | NEERC 2014 Eastern Subregional | 150 | 1102 |
| 1948 | The Robot on the Line | Ural FU Personal Contest 2012 | 194 | 1104 |
| 1540 | Battle for the Ring | USU Personal Contest 2007 | 367 | 1105 |
| 1921 | Chaos and Order | Ural Regional School Programming Contest 2012 | 198 | 1110 |
| 1937 | Davy Jones’s Organ | Ural FU Championship 2012 | 197 | 1110 |
| 1768 | Circular Strings | Ural Championship 2010 | 267 | 1113 |
| 1887 | Frequent Flyer Card | NEERC 2011 Eastern Subregional | 223 | 1116 |
| 1862 | Very Wealthy Mole | Ural FU Championship 2011 | 223 | 1121 |
| 1784 | Rounders | Ural SU Championship 2010 | 250 | 1125 |
| 1341 | Device | USU Championship 2004 | 406 | 1128 |
| 1595 | Perfect Sequence | | 288 | 1128 |
| 1976 | Game Optimization | Ural Championship 2013 | 175 | 1130 |
| 2123 | Knapsack | Petrozavodsk Summer 2018. t.me/umnik_team Contest | 43 | 1139 |
| 1907 | Coffee and Buns | Ural Championship 2012 | 193 | 1142 |
| 1472 | Martian Army | Petrozavodsk Summer 2006. Ural+Orel Contest | 367 | 1149 |
| 1099 | Work Scheduling | | 891 | 1160 |
| 1386 | Maze | Petrozavodsk Summer 2005. Moscow+Ural Contest | 396 | 1161 |
| 1736 | Chinese Hockey | USU Championship 2009 | 267 | 1164 |
| 1687 | Numismatics for Fun | USU Personal Contest 2009 | 284 | 1173 |
| 2059 | Not common palindromes | Palindromic Contest | 123 | 1176 |
| 1408 | Polynomial Multiplication | Autumn School Contest 2005 | 390 | 1179 |
| 1857 | Alice and Bandersnatch | Petrozavodsk Summer 2011. Ural SU Team.GOV Contest | 213 | 1179 |
| 2134 | Stampman | Later is better than never | 37 | 1179 |
| 1441 | From the History of Gringotts Bank | Ural Championship 2006 | 372 | 1186 |
| 1393 | Average Common Prefix | | 383 | 1188 |
| 1511 | Fiscal Operations | Timus Top Coders: Third Challenge | 347 | 1189 |
| 1750 | Pakhom and the Gully | Petrozavodsk Summer 2009. Ufa SATU Contest | 255 | 1189 |
| 1357 | Teakettle 1.0 for Dummies | Spring School Contest 2005 | 384 | 1192 |
| 1544 | Classmates 3 | Ural Championship 2007 | 333 | 1199 |
| 1790 | Searching for the Truth | Ural Regional School Programming Contest 2010 | 231 | 1211 |
| 1949 | The Best Picture in the Galaxy | Ural FU Personal Contest 2012 | 176 | 1211 |
| 1458 | War Games | Timus Top Coders: Second Challenge | 361 | 1213 |
| 2052 | Physical Education | Ural Championship 2015 | 123 | 1213 |
| 1979 | Resources Distribution | Ural Championship 2013 | 162 | 1215 |
| 1722 | Observation Deck | Ural Regional School Programming Contest 2009 | 254 | 1227 |
| 1453 | Queen | Timus Top Coders: Second Challenge | 356 | 1230 |
| 1467 | Sum of Degrees | Petrozavodsk Winter 2006. USU Contest | 346 | 1230 |
| 2129 | Mortgage in Far Away Kingdom | Later is better than never | 35 | 1231 |
| 1310 | ACM Diagnostics | Ural Championship 2004. Round 1 | 367 | 1232 |
| 1666 | Vasya Ferrari | Petrozavodsk Winter 2008. USU Contest | 274 | 1238 |
| 1359 | Construction | Spring School Contest 2005 | 369 | 1239 |
| 1855 | Trade Guilds of Erathia | Petrozavodsk Summer 2011. Ural SU Team.GOV Contest | 201 | 1246 |
| 1538 | Towers of Guard | USU Personal Contest 2007 | 324 | 1247 |
| 2093 | All Roads Lead to Snowdrift | Ural FU Personal Contest 2014 | 94 | 1255 |
| 1584 | Pharaohs’ Secrets | NEERC 2007 Eastern Subregional | 300 | 1265 |
| 1747 | Kingdom Inspection | Petrozavodsk Summer 2009. Ufa SATU Contest | 239 | 1265 |
| 1487 | Chinese Football | USU Championship 2006 | 328 | 1278 |
| 1879 | GOV-internship 2 | Ural Regional School Programming Contest 2011 | 194 | 1278 |
| 1307 | Archiver | Ural Championship 2004. Round 1 | 352 | 1283 |
| 1791 | Uncle Styopa and Buses | Ural Regional School Programming Contest 2010 | 217 | 1286 |
| 1766 | Humpty Dumpty | Ural Championship 2010 | 227 | 1300 |
| 2055 | Urban Geography | Ural Championship 2015 | 114 | 1301 |
| 1419 | Maps of the Island Worlds | USU Championship 2005 | 350 | 1305 |
| 2036 | Intersect Until You're Sick of It | Petrozavodsk Summer 2014. Ural FU Dandelion Contest | 123 | 1306 |
| 1669 | Universal Word | Petrozavodsk Winter 2008. USU Contest | 259 | 1307 |
| 1035 | Cross-stitch | Ural Championship 1999 | 1036 | 1314 |
| 1171 | Lost in Space | Romanian Online Contest December 2001 | 330 | 1319 |
| 1177 | Like Comparisons | USU Personal Contest 2002 | 331 | 1319 |
| 1552 | Brainfuck | Petrozavodsk Summer 2007. NSU Contest | 290 | 1319 |
| 1811 | Dual-SIM Phone | Petrozavodsk Summer 2010. Tavrida NU Contest | 203 | 1328 |
| 1360 | Philosophical Dispute | Ural Championship 2005. Round 2 | 341 | 1339 |
| 2126 | Partition into Teams | Petrozavodsk Summer 2018. t.me/umnik_team Contest | 35 | 1342 |
| 1983 | Nectar Gathering | Ural FU Championship 2013 | 141 | 1345 |
| 1321 | Floor Indicator | Ural Championship 2004. Round 2 | 335 | 1346 |
| 1527 | Bad Roads | Petrozavodsk Winter 2007. D.Gozman Contest | 299 | 1352 |
| 1807 | Cartridges for Maxim | NEERC 2010 Eastern Subregional | 205 | 1352 |
| 1531 | Zones on a Plane | Petrozavodsk Winter 2007. D.Gozman Contest | 298 | 1356 |
| 1050 | Preparing an Article | USU Local Contest. March 2000 | 984 | 1357 |
| 1328 | Fireball | Autumn School Contest 2004 | 332 | 1366 |
| 2120 | Tree Average Weight | Petrozavodsk Summer 2018. t.me/umnik_team Contest | 34 | 1372 |
| 1968 | Glass Pyramid | Ural FU Personal Contest 2013 | 144 | 1378 |
| 1526 | Martian Plates | Petrozavodsk Winter 2007. D.Gozman Contest | 293 | 1379 |
| 1347 | Blog | Spring School Contest 2005 | 329 | 1385 |
| 1686 | Photovoltaic Spaceship | USU Personal Contest 2009 | 239 | 1385 |
| 1719 | Kill the Shaitan-Boss | NEERC 2009 Eastern Subregional | 224 | 1387 |
| 2147 | City Building | Ural School Programming Contest 2019 | 26 | 1389 |
| 1065 | Frontier | NEERC 2000 | 906 | 1392 |
| 1345 | HTML | USU Championship 2004 | 326 | 1396 |
| 1844 | Warlord of the Army of Mages | Petrozavodsk Summer 2010. USU Contest | 178 | 1402 |
| 1281 | River Basin | NEERC 2003 Central Subregional | 319 | 1403 |
| 1097 | Square Country 2 | USU Local Contest. March 2001 | 812 | 1405 |
| 1318 | Logarithm | Ural Championship 2004. Round 2 | 319 | 1411 |
| 1657 | Cube Snake | NEERC 2008 Eastern Subregional | 242 | 1413 |
| 1240 | Heroes of Might and Magic | NEERC 2002 | 310 | 1423 |
| 1673 | Admission to Exam | Petrozavodsk Summer 2008. USU Contest | 235 | 1427 |
| 1311 | Stable Construction | Ural Championship 2004. Round 1 | 314 | 1433 |
| 1499 | Kerchiefs | Autumn School Contest 2006 | 290 | 1437 |
| 1813 | Random Shuffler | Petrozavodsk Summer 2010. Tavrida NU Contest | 186 | 1443 |
| 1620 | Clever House | Petrozavodsk Winter 2008. ITMO Contest | 241 | 1447 |
| 1449 | Credit Operations 2 | Timus Top Coders: Second Challenge | 301 | 1448 |
| 1947 | Meander | Ural FU Personal Contest 2012 | 145 | 1453 |
| 1476 | Lunar Code | Petrozavodsk Summer 2006. Ural+Orel Contest | 288 | 1454 |
| 1266 | Kirchhoff's Law | USU Championship 2003 | 304 | 1469 |
| 1299 | Psylonians | Spring School Contest 2004 | 304 | 1477 |
| 2085 | Magic Programmer | Ural Championship 2016 | 80 | 1478 |
| 1170 | Desert | Romanian Online Contest December 2001 | 290 | 1495 |
| 1378 | Artificial Intelligence | Ural Championship 2005. Round 1 | 305 | 1497 |
| 1265 | Mirror | USU Championship 2003 | 298 | 1498 |
| 2132 | Graph Decomposition. Version 2 | Later is better than never | 27 | 1498 |
| 2136 | John vs Santa | Later is better than never | 27 | 1498 |
| 1412 | Autumn Tide | USU Championship 2005 | 299 | 1521 |
| 2058 | 100500 palidnromes | Palindromic Contest | 92 | 1533 |
| 2101 | Knight's Shield | Ural FU Junior Championship 2016 | 69 | 1535 |
| 2107 | Oppa Funcan Style | Ural FU Junior Championship 2016 | 69 | 1535 |
| 1762 | Search for a Hiding-Place | USU Personal Contest 2010 | 192 | 1538 |
| 1851 | GOV-internship | Petrozavodsk Summer 2011. Ural SU Team.GOV Contest | 161 | 1538 |
| 1746 | Hyperrook | Petrozavodsk Summer 2009. Ufa SATU Contest | 194 | 1545 |
| 2124 | Algebra on Segment | Petrozavodsk Summer 2018. t.me/umnik_team Contest | 29 | 1548 |
| 2007 | Mutants versus Machines | Ural Regional School Programming Contest 2013 | 120 | 1550 |
| 1913 | Titan Ruins: Alignment of Forces | NEERC 2012 Eastern Subregional | 138 | 1563 |
| 1946 | Chinese Hockey 3 | Ural FU Personal Contest 2012 | 134 | 1564 |
| 1387 | Vasya's Dad | Petrozavodsk Summer 2005. Moscow+Ural Contest | 291 | 1567 |
| 1043 | Cover an Arc | USU Championship 2000 | 859 | 1570 |
| 1985 | Prime Square | Ural FU Championship 2013 | 119 | 1574 |
| 1488 | ACM Poker | USU Championship 2006 | 264 | 1576 |
| 1251 | Cemetery Manager | USU Local Contest. March 2003 | 280 | 1577 |
| 1337 | Bureaucracy | Autumn School Contest 2004 | 285 | 1584 |
| 1951 | Complex Root | Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection | 124 | 1588 |
| 1677 | Monkey at the Keyboard | Petrozavodsk Summer 2008. USU Contest | 210 | 1589 |
| 1568 | Train Car Sorting | USU Championship 2007 | 238 | 1590 |
| 1770 | The Party of Ural Champions | Ural Championship 2010 | 182 | 1605 |
| 1485 | Football and Lie | USU Championship 2006 | 252 | 1649 |
| 1764 | Transsib | Ural Championship 2010 | 176 | 1657 |
| 1241 | Inlay Cutters | NEERC 2002 | 262 | 1676 |
| 1565 | The Duel for Three | USU Championship 2007 | 222 | 1699 |
| 1420 | Integer-Valued Complex Division | USU Championship 2005 | 265 | 1709 |
| 1808 | Chapaev at the Planet Ocean | NEERC 2010 Eastern Subregional | 160 | 1710 |
| 1508 | Japanese Puzzle | NEERC 2006 Eastern Subregional | 241 | 1712 |
| 1557 | Network Attack | Petrozavodsk Summer 2007. NSU Contest | 220 | 1720 |
| 1257 | Hyphenation | Autumn School Contest 2003 | 258 | 1721 |
| 1675 | Lunar Code 2 | Petrozavodsk Summer 2008. USU Contest | 191 | 1739 |
| 1894 | Non-Flying Weather | NEERC 2011 Eastern Subregional | 139 | 1746 |
| 1676 | Mortal Kombat | Petrozavodsk Summer 2008. USU Contest | 190 | 1747 |
| 1459 | Archer's Travel | Petrozavodsk Winter 2006. USU Contest | 240 | 1752 |
| 1670 | Asterisk | Petrozavodsk Summer 2008. USU Contest | 189 | 1756 |
| 1148 | Building Towers | DSAP Vietnam Online Contest November 2001 | 245 | 1757 |
| 1950 | Martian Farmlands | Ural FU Personal Contest 2012 | 118 | 1760 |
| 1425 | Queen 2 | Timus Top Coders: First Challenge | 250 | 1762 |
| 2097 | Snowboarding on Spilnaya | Ural FU Personal Contest 2014 | 64 | 1764 |
| 1285 | Thread in a Hyperspace | USU Personal Contest 2004 | 252 | 1769 |
| 1397 | Points Game | | 234 | 1776 |
| 1338 | Automobiles | USU Championship 2004 | 253 | 1784 |
| 1382 | Game with Cards | Petrozavodsk Summer 2005. Moscow+Ural Contest | 253 | 1793 |
| 1062 | Triathlon | NEERC 2000 | 698 | 1800 |
| 1503 | Polynomial | NEERC 2006 Eastern Subregional | 228 | 1805 |
| 1583 | Cheese | NEERC 2007 Eastern Subregional | 207 | 1807 |
| 1703 | Robotic Arm | Ural Championship 2009 | 179 | 1808 |
| 1886 | Trip 2 | NEERC 2011 Eastern Subregional | 133 | 1819 |
| 1144 | The Emperor's Riddle | DSAP Vietnam Online Contest November 2001 | 236 | 1821 |
| 1046 | Geometrical Dreams | USU Local Contest. March 2000 | 730 | 1822 |
| 1919 | Titan Ruins: Transformation of Cylinders | NEERC 2012 Eastern Subregional | 117 | 1822 |
| 1908 | Brute-force Search | Ural Championship 2012 | 117 | 1826 |
| 1707 | Hypnotoad's Secret | Ural Championship 2009 | 177 | 1827 |
| 1516 | Nostalgia | Timus Top Coders: Third Challenge | 222 | 1830 |
| 1802 | Cube Puzzle | NEERC 2010 Eastern Subregional | 148 | 1840 |
| 1514 | National Park | Timus Top Coders: Third Challenge | 219 | 1854 |
| 1610 | Cactuses | Ural Championship 2008 | 192 | 1865 |
| 2041 | Nanomatryoshkas | Petrozavodsk Summer 2014. Ural FU Dandelion Contest | 83 | 1868 |
| 1818 | Fair Fishermen | Petrozavodsk Summer 2010. Tavrida NU Contest | 140 | 1885 |
| 1782 | Jack's New Word | Ural SU Championship 2010 | 145 | 1887 |
| 1417 | Space Poker 2 | USU Championship 2005 | 237 | 1902 |
| 1615 | Tram Solitaire | Ural Championship 2008 | 188 | 1903 |
| 1744 | The Captain's Squad | Petrozavodsk Summer 2009. Ufa SATU Contest | 155 | 1910 |
| 1749 | Periodic Sum | Petrozavodsk Summer 2009. Ufa SATU Contest | 155 | 1910 |
| 1093 | Darts | USU Local Contest. March 2001 | 592 | 1919 |
| 1667 | Square Country 3 | Petrozavodsk Winter 2008. USU Contest | 172 | 1931 |
| 1304 | Parallelepiped | Ural Championship 1998 | 230 | 1934 |
| 1492 | Vasya's Dad 2 | Autumn School Contest 2006 | 212 | 1942 |
| 1522 | Factory | Petrozavodsk Winter 2007. D.Gozman Contest | 205 | 1943 |
| 2118 | Ciphertext | Petrozavodsk Summer 2018. t.me/umnik_team Contest | 21 | 1948 |
| 1664 | Pipeline Transportation | Petrozavodsk Winter 2008. USU Contest | 170 | 1953 |
| 1163 | Chapaev | NEERC 2001 Northern Subregional | 218 | 1967 |
| 1267 | Yekaterinburg Subway | USU Championship 2003 | 224 | 1972 |
| 1734 | Endgame Database | USU Championship 2009 | 153 | 1978 |
| 1315 | MDPAR and MIIAR | Ural Championship 2004. Round 1 | 224 | 1984 |
| 1532 | Lost in Translation | USU Personal Contest 2007 | 199 | 1992 |
| 1396 | Maximum. Version 2 | | 212 | 2019 |
| 1702 | Crossroad | Ural Championship 2009 | 159 | 2022 |
| 1831 | Tsyfirkin's Lesson | Ural Championship 2011 | 126 | 2024 |
| 1455 | Freedom of Speech | Timus Top Coders: Second Challenge | 212 | 2028 |
| 1655 | Somali Pirates | NEERC 2008 Eastern Subregional | 165 | 2035 |
| 1216 | Two Pawns and One King | USU Championship 2002 | 213 | 2039 |
| 1074 | Very Short Problem | USU Personal Contest 2001 | 597 | 2041 |
| 1841 | Cableways | Petrozavodsk Summer 2010. USU Contest | 119 | 2043 |
| 1187 | Statistical Trouble | NEERC 2001 | 210 | 2046 |
| 1075 | Thread in a Space | USU Personal Contest 2001 | 588 | 2072 |
| 1541 | Chase | USU Personal Contest 2007 | 189 | 2092 |
| 1041 | Nikifor | USU Championship 2000 | 640 | 2100 |
| 1757 | Gold Bars | USU Personal Contest 2010 | 138 | 2100 |
| 1063 | Domino Puzzle | NEERC 2000 | 589 | 2126 |
| 1956 | Fire Signals | Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection | 90 | 2127 |
| 1634 | Spider Mite | USU Championship 2008 | 158 | 2131 |
| 2133 | Terms of reference | Later is better than never | 16 | 2131 |
| 1781 | Clean Code | Ural SU Championship 2010 | 127 | 2135 |
| 1231 | Turing: One, Two, Three, … | NEERC 2002 Central Subregional | 202 | 2145 |
| 1188 | Library | NEERC 2001 | 199 | 2154 |
| 1953 | Biggest Inscribed Ellipse | Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection | 88 | 2171 |
| 1739 | Faryuks | USU Championship 2009 | 138 | 2179 |
| 1849 | Rabbit Hunt 2 | Petrozavodsk Summer 2010. USU Contest | 110 | 2196 |
| 1543 | Dance Revolution | Ural Championship 2007 | 176 | 2211 |
| 1288 | Astrolocation | USU Personal Contest 2004 | 199 | 2218 |
| 2044 | 31 Palindromes | Petrozavodsk Summer 2014. Ural FU Dandelion Contest | 68 | 2227 |
| 1361 | Spaceology vs. Chronistics | Ural Championship 2005. Round 2 | 200 | 2238 |
| 1092 | Transversal | USU Local Contest. March 2001 | 504 | 2247 |
| 2038 | Minimum Vertex Cover | Petrozavodsk Summer 2014. Ural FU Dandelion Contest | 67 | 2256 |
| 1549 | Another Japanese Puzzle | Ural Championship 2007 | 172 | 2260 |
| 1852 | Cube in a Cube in a Cube | Petrozavodsk Summer 2011. Ural SU Team.GOV Contest | 106 | 2267 |
| 1867 | Nanotechnologies | Ural FU Championship 2011 | 105 | 2272 |
| 1895 | Steaks on Board | NEERC 2011 Eastern Subregional | 104 | 2282 |
| 1839 | The Mentaculus | Ural Championship 2011 | 110 | 2294 |
| 1977 | Energy Wall | Ural Championship 2013 | 81 | 2296 |
| 1816 | Troubles with Pollard | Petrozavodsk Summer 2010. Tavrida NU Contest | 113 | 2299 |
| 1256 | Cemetery Guard | USU Local Contest. March 2003 | 187 | 2321 |
| 2125 | Continue the Sequence | Petrozavodsk Summer 2018. t.me/umnik_team Contest | 16 | 2322 |
| 1504 | Good Manners | NEERC 2006 Eastern Subregional | 174 | 2335 |
| 1481 | Winning Chances | USU Championship 2006 | 174 | 2347 |
| 1232 | Asteroid Landing | NEERC 2002 Central Subregional | 183 | 2357 |
| 1284 | Space Poker | USU Personal Contest 2004 | 186 | 2365 |
| 1969 | Hong Kong Tram | Ural FU Personal Contest 2013 | 79 | 2384 |
| 1833 | Hopes of Rowing | Ural Championship 2011 | 105 | 2393 |
| 1717 | Eligibility Rules | NEERC 2009 Eastern Subregional | 125 | 2403 |
| 2050 | 3D-modeling | Ural Championship 2015 | 57 | 2408 |
| 1270 | Unicube | USU Championship 2003 | 180 | 2428 |
| 1368 | Goat in the Garden 3 | Ural Championship 2005. Round 2 | 183 | 2435 |
| 2139 | Experiment with Juice | Ural School Programming Contest 2019 | 10 | 2501 |
| 2127 | Determinant of a Graph | Petrozavodsk Summer 2018. t.me/umnik_team Contest | 14 | 2516 |
| 1652 | Banking Crisis | NEERC 2008 Eastern Subregional | 131 | 2525 |
| 1520 | Empire Strikes Back | Timus Top Coders: Third Challenge | 158 | 2527 |
| 1812 | The Island of Bad Luck 2 | Petrozavodsk Summer 2010. Tavrida NU Contest | 101 | 2548 |
| 2075 | Take care of your eyebrows! | Qualification of Eastern Subregional 2015 | 45 | 2553 |
| 1454 | Rectangles 2 | Timus Top Coders: Second Challenge | 166 | 2558 |
| 1850 | Space Tourism | Petrozavodsk Summer 2010. USU Contest | 93 | 2558 |
| 1882 | Old Nokia | Ural Regional School Programming Contest 2011 | 91 | 2581 |
| 1599 | Winding Number | | 48 | 2603 |
| 2083 | The Guardian of Traditions | Ural Championship 2016 | 41 | 2608 |
| 1395 | Pascal vs. C++. Version 2 | | 162 | 2614 |
| 1978 | E-Lite | Ural Championship 2013 | 69 | 2645 |
| 1597 | Chernobyl’ Eagle on a Roof. Version 2 | | 58 | 2649 |
| 1758 | Bald Spot Revisited 2 | USU Personal Contest 2010 | 107 | 2656 |
| 1429 | Biscuits | Timus Top Coders: First Challenge | 162 | 2663 |
| 1275 | Knights of the Round Table | NEERC 2003 Central Subregional | 161 | 2700 |
| 1609 | Tram Tile | Ural Championship 2008 | 129 | 2711 |
| 2096 | All Inclusive | Ural FU Personal Contest 2014 | 38 | 2720 |
| 1300 | Taxes | Ural Championship 1998 | 160 | 2730 |
| 2122 | Hamming | Petrozavodsk Summer 2018. t.me/umnik_team Contest | 12 | 2744 |
| 1972 | Game Testing | Ural Championship 2013 | 66 | 2750 |
| 1561 | Winnie the Pooh | Petrozavodsk Summer 2007. NSU Contest | 133 | 2767 |
| 2084 | Technical debt | Ural Championship 2016 | 38 | 2771 |
| 1835 | Swamp Doctor | Ural Championship 2011 | 89 | 2780 |
| 2049 | Chemistry | Ural Championship 2015 | 48 | 2782 |
| 1916 | Titan Ruins: Waiting for Stability | NEERC 2012 Eastern Subregional | 73 | 2787 |
| 1663 | The Hobbit or There and Back Again 2 | Petrozavodsk Winter 2008. USU Contest | 116 | 2789 |
| 1308 | Dean's Pyramid | Ural Championship 2004. Round 1 | 156 | 2797 |
| 1955 | Boss, I Can See You! | Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection | 66 | 2799 |
| 1735 | Theft of the Century | USU Championship 2009 | 105 | 2804 |
| 1694 | Killer Words | Petrozavodsk Winter 2009. USU Contest | 111 | 2840 |
| 1464 | Light | Petrozavodsk Winter 2006. USU Contest | 144 | 2844 |
| 1945 | Many-armed Brothers | Ural FU Personal Contest 2012 | 69 | 2852 |
| 1058 | Chocolate | NEERC 2000 Central Subregional | 459 | 2863 |
| 1714 | Mnemonics and Palindromes 2 | NEERC 2009 Eastern Subregional | 103 | 2871 |
| 1312 | Tray | Ural Championship 2004. Round 1 | 151 | 2884 |
| 1829 | Routing Tables | USU Personal Contest 2011 | 85 | 2934 |
| 1566 | Triangular Postcards | USU Championship 2007 | 124 | 2942 |
| 1704 | Demodulation | Ural Championship 2009 | 106 | 2946 |
| 1814 | Continued Fraction | Petrozavodsk Summer 2010. Tavrida NU Contest | 86 | 2946 |
| 1695 | Work for Robots | Petrozavodsk Winter 2009. USU Contest | 106 | 2962 |
| 1865 | The Island of Märket | Ural FU Championship 2011 | 78 | 2969 |
| 1239 | Ghost Busters | NEERC 2002 | 143 | 2977 |
| 1477 | Airplanes | Petrozavodsk Summer 2006. Ural+Orel Contest | 135 | 2988 |
| 2022 | Riding a Toad | NEERC 2014 Eastern Subregional | 49 | 2988 |
| 1505 | Oil Transfer | NEERC 2006 Eastern Subregional | 133 | 3005 |
| 2053 | Biology | Ural Championship 2015 | 43 | 3045 |
| 1411 | 40 Islands Knights | USU Championship 2005 | 144 | 3051 |
| 1637 | Triangle Game 2 | USU Championship 2008 | 107 | 3060 |
| 2061 | OEIS A216264 | Palindromic Contest | 41 | 3066 |
| 1438 | Time Limit Exceeded | USU Personal Contest 2006 | 138 | 3084 |
| 1367 | Top Secret | Ural Championship 2005. Round 2 | 142 | 3092 |
| 2087 | Trains | Ural Championship 2016 | 33 | 3093 |
| 1691 | Algorithm Complexity | Petrozavodsk Winter 2009. USU Contest | 101 | 3096 |
| 1442 | Floo Powder | Ural Championship 2006 | 136 | 3104 |
| 1482 | Triangle Game | USU Championship 2006 | 129 | 3107 |
| 1466 | Magic Square | Petrozavodsk Winter 2006. USU Contest | 128 | 3174 |
| 1958 | Algorithm of Professor Ivanov | Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection | 56 | 3223 |
| 2137 | Dynamic string complexity | Later is better than never | 7 | 3259 |
| 1622 | Endspiel | Petrozavodsk Winter 2008. ITMO Contest | 101 | 3273 |
| 1623 | Fractal Labyrinth | Petrozavodsk Winter 2008. ITMO Contest | 100 | 3303 |
| 2057 | Non-palidromic cutting | Palindromic Contest | 37 | 3327 |
| 1681 | Brother Bear's Garden | USU Personal Contest 2009 | 92 | 3382 |
| 1751 | Improbability Theory | Petrozavodsk Summer 2009. Ufa SATU Contest | 83 | 3388 |
| 2006 | Kirill the Gardener | Ural Regional School Programming Contest 2013 | 49 | 3415 |
| 1856 | War and Peace | Petrozavodsk Summer 2011. Ural SU Team.GOV Contest | 67 | 3416 |
| 1954 | Five Palindromes | Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection | 52 | 3431 |
| 1957 | Mundial | Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection | 52 | 3431 |
| 2051 | Physics | Ural Championship 2015 | 37 | 3433 |
| 2131 | Open Cup | Later is better than never | 6 | 3463 |
| 1381 | Cockroaches in the Building | Petrozavodsk Summer 2005. Moscow+Ural Contest | 124 | 3519 |
| 1843 | Cutting a Parallelepiped | Petrozavodsk Summer 2010. USU Contest | 64 | 3561 |
| 1166 | Funny Card Game | NEERC 2001 Northern Subregional | 119 | 3575 |
| 1911 | Titan Ruins: Overtaking Fire | NEERC 2012 Eastern Subregional | 53 | 3672 |
| 1810 | Antiequations | Petrozavodsk Summer 2010. Tavrida NU Contest | 66 | 3721 |
| 1199 | Mouse | | 103 | 3741 |
| 1765 | Error 404 | Ural Championship 2010 | 72 | 3758 |
| 1509 | Domino Recognition | NEERC 2006 Eastern Subregional | 104 | 3769 |
| 1798 | Fire Circle. Version 2 | | 31 | 3776 |
| 1975 | Model of the Earth | Ural Championship 2013 | 45 | 3800 |
| 1616 | Square Country 4 | Ural Championship 2008 | 89 | 3806 |
| 1858 | Magic Cube | Petrozavodsk Summer 2011. Ural SU Team.GOV Contest | 59 | 3812 |
| 1478 | Spy Satellites | Petrozavodsk Summer 2006. Ural+Orel Contest | 100 | 3939 |
| 2043 | Kirill the Gardener 2 | Petrozavodsk Summer 2014. Ural FU Dandelion Contest | 34 | 3948 |
| 1559 | TruCoders Linguistics | Petrozavodsk Summer 2007. NSU Contest | 89 | 3996 |
| 1909 | Space Recon | Ural Championship 2012 | 48 | 3998 |
| 1778 | Chinese Hockey 2 | Ural SU Championship 2010 | 63 | 4006 |
| 1632 | Lasers | USU Championship 2008 | 79 | 4023 |
| 2079 | Memory leaks | Ural Championship 2016 | 23 | 4030 |
| 1380 | Ostap's Chess | Petrozavodsk Summer 2005. Moscow+Ural Contest | 106 | 4065 |
| 1529 | Game of Squares | Petrozavodsk Winter 2007. D.Gozman Contest | 92 | 4096 |
| 1815 | Farm in San Andreas | Petrozavodsk Summer 2010. Tavrida NU Contest | 59 | 4099 |
| 1845 | Integer-valued Complex Determinant | Petrozavodsk Summer 2010. USU Contest | 54 | 4117 |
| 1475 | Ryaba Hen | Petrozavodsk Summer 2006. Ural+Orel Contest | 95 | 4127 |
| 1914 | Titan Ruins: Serial Control | NEERC 2012 Eastern Subregional | 46 | 4131 |
| 1834 | Tennis Racket | Ural Championship 2011 | 56 | 4170 |
| 1460 | Wires | Petrozavodsk Winter 2006. USU Contest | 95 | 4171 |
| 1661 | Dodecahedron | Petrozavodsk Winter 2008. USU Contest | 74 | 4184 |
| 1799 | Sasha and swag strings | | 26 | 4188 |
| 1897 | Alice and Bob and a string | | 8 | 4209 |
| 2090 | Crossroads of Destiny | Ural FU Personal Contest 2014 | 21 | 4211 |
| 1847 | Zamkadye | Petrozavodsk Summer 2010. USU Contest | 52 | 4250 |
| 1938 | Caribbean Triangle | Ural FU Championship 2012 | 43 | 4334 |
| 1733 | Forgotten Technology | USU Championship 2009 | 64 | 4358 |
| 2086 | Find Denis | Ural Championship 2016 | 20 | 4433 |
| 1598 | DSA Attack | | 30 | 4455 |
| 1859 | Last Season of Team.GOV | Petrozavodsk Summer 2011. Ural SU Team.GOV Contest | 49 | 4458 |
| 1344 | Gigantic Turnip | USU Championship 2004 | 94 | 4511 |
| 1662 | Goat in the Garden 6 | Petrozavodsk Winter 2008. USU Contest | 66 | 4625 |
| 1621 | Definite Integral | Petrozavodsk Winter 2008. ITMO Contest | 68 | 4658 |
| 1967 | Programmer Casino | Ural FU Personal Contest 2013 | 35 | 4716 |
| 1271 | Sailing Directions | USU Championship 2003 | 87 | 4757 |
| 1340 | Cucaracha | USU Championship 2004 | 87 | 4837 |
| 1365 | Testing Calculator | Ural Championship 2005. Round 2 | 87 | 4846 |
| 1594 | Aztec Treasure | | 59 | 4877 |
| 2088 | Nostalgic Evening | Ural Championship 2016 | 17 | 4882 |
| 2042 | Nikita | Petrozavodsk Summer 2014. Ural FU Dandelion Contest | 25 | 4963 |
| 2094 | Thousand Imps | Ural FU Personal Contest 2014 | 16 | 5021 |
| 1797 | Summit Online Judge. Version 2 | | 36 | 5074 |
| 1973 | Location Generator | Ural Championship 2013 | 31 | 5097 |
| 1473 | Farm 2 | Petrozavodsk Summer 2006. Ural+Orel Contest | 74 | 5158 |
| 1618 | Arrays Printing | Petrozavodsk Winter 2008. ITMO Contest | 60 | 5190 |
| 2077 | Reductions | Qualification of Eastern Subregional 2015 | 17 | 5200 |
| 1426 | Rectangles | Timus Top Coders: First Challenge | 78 | 5204 |
| 1384 | Goat in the Garden 4 | Petrozavodsk Summer 2005. Moscow+Ural Contest | 80 | 5240 |
| 1391 | Snake | Petrozavodsk Summer 2005. Moscow+Ural Contest | 80 | 5240 |
| 1801 | The Revolution Cup | NEERC 2010 Eastern Subregional | 45 | 5285 |
| 1479 | Scheduled Checking | Petrozavodsk Summer 2006. Ural+Orel Contest | 71 | 5349 |
| 1697 | Sniper Shot | Petrozavodsk Winter 2009. USU Contest | 54 | 5369 |
| 1763 | Expert Flea | Ural Championship 2010 | 46 | 5503 |
| 1771 | A Deputy's Morning | Ural Championship 2010 | 45 | 5603 |
| 2039 | Striped Square | Petrozavodsk Summer 2014. Ural FU Dandelion Contest | 21 | 5603 |
| 1848 | Fly Hunt | Petrozavodsk Summer 2010. USU Contest | 37 | 5606 |
| 1999 | The secret module | NEERC 2013 Eastern Subregional | 26 | 5626 |
| 1372 | Death Star | Ural Championship 2005. Round 1 | 73 | 5680 |
| 1363 | Halftones | Ural Championship 2005. Round 2 | 71 | 5803 |
| 1674 | Drunk King | Petrozavodsk Summer 2008. USU Contest | 48 | 6026 |
| 1842 | Local Roots | Petrozavodsk Summer 2010. USU Contest | 33 | 6128 |
| 2054 | Astronomy | Ural Championship 2015 | 16 | 6206 |
| 1668 | Death Star 2 | Petrozavodsk Winter 2008. USU Contest | 46 | 6276 |
| 2082 | Poker | Ural Championship 2016 | 11 | 6312 |
| 2076 | Vasiana | Qualification of Eastern Subregional 2015 | 12 | 6381 |
| 1660 | The Island of Bad Luck | Petrozavodsk Winter 2008. USU Contest | 45 | 6390 |
| 1819 | Professional Approach | Petrozavodsk Summer 2010. Tavrida NU Contest | 34 | 6428 |
| 1624 | Go out of here! | Petrozavodsk Winter 2008. ITMO Contest | 46 | 6487 |
| 2016 | Magic and Science | NEERC 2014 Eastern Subregional | 17 | 6529 |
| 1906 | The Lost Civilization | Ural Championship 2012 | 25 | 6626 |
| 1853 | Laser Technologies | Petrozavodsk Summer 2011. Ural SU Team.GOV Contest | 29 | 6743 |
| 1536 | Delights of Pipe-weed | USU Personal Contest 2007 | 51 | 6826 |
| 1653 | Death Conveyor | NEERC 2008 Eastern Subregional | 42 | 6847 |
| 1649 | Abstractionism to the People | NEERC 2008 Eastern Subregional | 41 | 6982 |
| 1626 | Interfering Segment | Petrozavodsk Winter 2008. ITMO Contest | 37 | 7730 |
| 1432 | Twofold Luck | USU Personal Contest 2006 | 46 | 8150 |
| 1840 | Victim of Advertising | Ural Championship 2011 | 23 | 8340 |
| 1678 | Space Poker 3 | Petrozavodsk Summer 2008. USU Contest | 30 | 8737 |
| 1596 | Knight Mare | | 18 | 8905 |
| 1415 | Mobile Life | USU Championship 2005 | 40 | 9395 |
| 1556 | Multishot in the Secret Cow Level | Petrozavodsk Summer 2007. NSU Contest | 32 | 9419 |
| 1376 | Dean's Pyramid 2 | Ural Championship 2005. Round 1 | 39 | 9622 |
| 1390 | Shots at Walls | Petrozavodsk Summer 2005. Moscow+Ural Contest | 37 | 10033 |
| 1952 | To Kill the Dragon | Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection | 10 | 10636 |
| 1399 | Economical Director | | 29 | 10838 |
| 1672 | Droid flies | Petrozavodsk Summer 2008. USU Contest | 22 | 10921 |
| 1693 | Loyd's Problem | Petrozavodsk Winter 2009. USU Contest | 21 | 11085 |
| 1555 | Find the Treasure! | Petrozavodsk Summer 2007. NSU Contest | 24 | 11636 |
| 1374 | Misere | Ural Championship 2005. Round 1 | 29 | 12089 |
| 1524 | Men in Black | Petrozavodsk Winter 2007. D.Gozman Contest | 22 | 13054 |
| 1708 | Sum of Digits 2 | Ural Championship 2009 | 16 | 13140 |
| 1369 | Cockroach Race | Ural Championship 2005. Round 2 | 23 | 14243 |
| 1383 | Flower-garden Designs | Petrozavodsk Summer 2005. Moscow+Ural Contest | 23 | 14290 |
| 1388 | Photo | Petrozavodsk Summer 2005. Moscow+Ural Contest | 18 | 16841 |
| 1548 | Sakura and Statistics | Ural Championship 2007 | 13 | 17883 |
| 1589 | Sokoban | NEERC 2007 Eastern Subregional | 8 | 21783 |
| 1394 | Ships. Version 2 | | 8 | 26199 |
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