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Problem set. Number Theory Problems

Solved problems: show | hide  •  Sort by: id | authors | difficulty

IDTitleSourceAuthorsDifficulty

1049Brave BalloonistsUSU Local Contest. March 20006151249

1086CryptographySpring School Contest 200112956106

1091Tmutarakan ExamsUSU Local Contest. March 20012485525

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001532894

1118Nontrivial NumbersAutumn School Contest 20014890103

1132Square Root920545

1133Fibonacci SequenceNEERC 2001 Central Subregional2248224

1141RSA Attack1388362

1204IdempotentsUSU Local Contest. March 20022209229

1261TipsAutumn School Contest 20031566329

1268Little ChuUSU Championship 2003709721

1286Starship TravelUSU Personal Contest 2004785655

1343Fairy TaleUSU Championship 20041253416

1352Mersenne PrimesSpring School Contest 20053984132

1355Bald Spot RevisitedSpring School Contest 20052471212

1356Something EasierSpring School Contest 20051757298

1430Crime and PunishmentTimus Top Coders: First Challenge1110460

1456Jedi Riddle 2Timus Top Coders: Second Challenge669749

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest711638

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest482935

1593Square Country. Version 2566723

1598DSA Attack593851

1698Square Country 5Petrozavodsk Winter 2009. USU Contest639637

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1450266

1807Cartridges for MaximNEERC 2010 Eastern Subregional2371483

2047MathsUral Championship 2015519474

2070Interesting NumbersUral Regional School Programming Contest 20151030231

2102Michael and CryptographyUral FU Junior Championship 20161479144

2117Polyphemus' triplesUniversity-Academy Olympiad 2019296531

2124Algebra on SegmentPetrozavodsk Summer 2018. umnik_team contest1101337

2138The Good, the Bad and the UglyUral School Programming Contest 20191352111

2184Flint's Favorite NumberUral School Programming Contest 2024251378

2205Natural NumbersUniversity-Academy Olympiad 2022131222

2206Runes in the Field 2University-Academy Olympiad 202251870

2208Two GiftsUniversity-Academy Olympiad 2023111334

2211Integer TrianglesUniversity-Academy Olympiad 202351870

2220Reciprocal of GCDICPC Ural Regional Contest Qualifier 2025131219
Solved problems: show | hide  •  Sort by: id | authors | difficulty
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