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Problem set. Number Theory Problems

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

IDTitleSourceAuthorsDifficulty

1049Brave BalloonistsUSU Local Contest. March 20006181249

1086CryptographySpring School Contest 200113002107

1091Tmutarakan ExamsUSU Local Contest. March 20012490528

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001535095

1118Nontrivial NumbersAutumn School Contest 20014904104

1132Square Root927544

1133Fibonacci SequenceNEERC 2001 Central Subregional2258225

1141RSA Attack1394363

1204IdempotentsUSU Local Contest. March 20022216230

1261TipsAutumn School Contest 20031577329

1268Little ChuUSU Championship 2003713722

1286Starship TravelUSU Personal Contest 2004791654

1343Fairy TaleUSU Championship 20041261416

1352Mersenne PrimesSpring School Contest 20053999132

1355Bald Spot RevisitedSpring School Contest 20052483212

1356Something EasierSpring School Contest 20051767298

1430Crime and PunishmentTimus Top Coders: First Challenge1116461

1456Jedi Riddle 2Timus Top Coders: Second Challenge677746

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest717638

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest486935

1593Square Country. Version 2571724

1598DSA Attack653614

1698Square Country 5Petrozavodsk Winter 2009. USU Contest643640

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1455268

1807Cartridges for MaximNEERC 2010 Eastern Subregional2411477

2047MathsUral Championship 2015521482

2070Interesting NumbersUral Regional School Programming Contest 20151037234

2102Michael and CryptographyUral FU Junior Championship 20161494147

2117Polyphemus' triplesUniversity-Academy Olympiad 2019302540

2124Algebra on SegmentPetrozavodsk Summer 2018. umnik_team contest1181301

2138The Good, the Bad and the UglyUral School Programming Contest 20191387113

2184Flint's Favorite NumberUral School Programming Contest 2024371172

2205Natural NumbersUniversity-Academy Olympiad 202233816

2206Runes in the Field 2University-Academy Olympiad 2022201169

2208Two GiftsUniversity-Academy Olympiad 202326973

2211Integer TrianglesUniversity-Academy Olympiad 2023201168

2220Reciprocal of GCDICPC Ural Regional Contest Qualifier 202539715
Solved problems: show | hide  •  Sort by: id | authors | difficulty
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