| ENG RUS | Timus Online Judge |
Problem set. Number Theory Problems
| ID | Title | Source | Authors | Difficulty | |||
|---|---|---|---|---|---|---|---|
| 1049 | Brave Balloonists | USU Local Contest. March 2000 | 6148 | 249 | |||
| 1086 | Cryptography | Spring School Contest 2001 | 12950 | 106 | |||
| 1091 | Tmutarakan Exams | USU Local Contest. March 2001 | 2483 | 525 | |||
| 1104 | Don’t Ask Woman about Her Age | Tetrahedron Team Online Contest May 2001 | 5328 | 94 | |||
| 1118 | Nontrivial Numbers | Autumn School Contest 2001 | 4890 | 103 | |||
| 1132 | Square Root | 918 | 546 | ||||
| 1133 | Fibonacci Sequence | NEERC 2001 Central Subregional | 2248 | 224 | |||
| 1141 | RSA Attack | 1387 | 363 | ||||
| 1204 | Idempotents | USU Local Contest. March 2002 | 2207 | 229 | |||
| 1261 | Tips | Autumn School Contest 2003 | 1564 | 329 | |||
| 1268 | Little Chu | USU Championship 2003 | 706 | 724 | |||
| 1286 | Starship Travel | USU Personal Contest 2004 | 784 | 656 | |||
| 1343 | Fairy Tale | USU Championship 2004 | 1253 | 416 | |||
| 1352 | Mersenne Primes | Spring School Contest 2005 | 3983 | 132 | |||
| 1355 | Bald Spot Revisited | Spring School Contest 2005 | 2471 | 212 | |||
| 1356 | Something Easier | Spring School Contest 2005 | 1756 | 298 | |||
| 1430 | Crime and Punishment | Timus Top Coders: First Challenge | 1109 | 461 | |||
| 1456 | Jedi Riddle 2 | Timus Top Coders: Second Challenge | 669 | 749 | |||
| 1554 | Multiplicative Functions | Petrozavodsk Summer 2007. NSU Contest | 711 | 638 | |||
| 1560 | Elementary Symmetric Functions | Petrozavodsk Summer 2007. NSU Contest | 482 | 935 | |||
| 1593 | Square Country. Version 2 | 564 | 726 | ||||
| 1598 | DSA Attack | 58 | 3905 | ||||
| 1698 | Square Country 5 | Petrozavodsk Winter 2009. USU Contest | 638 | 638 | |||
| 1748 | The Most Complex Number | Petrozavodsk Summer 2009. Ufa SATU Contest | 1448 | 266 | |||
| 1807 | Cartridges for Maxim | NEERC 2010 Eastern Subregional | 236 | 1488 | |||
| 2047 | Maths | Ural Championship 2015 | 518 | 474 | |||
| 2070 | Interesting Numbers | Ural Regional School Programming Contest 2015 | 1030 | 231 | |||
| 2102 | Michael and Cryptography | Ural FU Junior Championship 2016 | 1478 | 144 | |||
| 2117 | Polyphemus' triples | University-Academy Olympiad 2019 | 293 | 535 | |||
| 2124 | Algebra on Segment | Petrozavodsk Summer 2018. umnik_team contest | 110 | 1335 | |||
| 2138 | The Good, the Bad and the Ugly | Ural School Programming Contest 2019 | 1350 | 111 | |||
| 2184 | Flint's Favorite Number | Ural School Programming Contest 2024 | 24 | 1411 | |||
| 2205 | Natural Numbers | University-Academy Olympiad 2022 | 11 | 1326 | |||
| 2206 | Runes in the Field 2 | University-Academy Olympiad 2022 | 3 | 2138 | |||
| 2208 | Two Gifts | University-Academy Olympiad 2023 | 7 | 1633 | |||
| 2211 | Integer Triangles | University-Academy Olympiad 2023 | 3 | 2138 | |||
| 2220 | Reciprocal of GCD | ICPC Ural Regional Contest Qualifier 2025 | 8 | 1543 | |||