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Problem set. Number Theory Problems

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

IDTitleSourceAuthorsDifficulty

1049Brave BalloonistsUSU Local Contest. March 20006148249

1086CryptographySpring School Contest 200112948106

1091Tmutarakan ExamsUSU Local Contest. March 20012482525

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

1118Nontrivial NumbersAutumn School Contest 20014887103

1132Square Root918546

1133Fibonacci SequenceNEERC 2001 Central Subregional2247224

1141RSA Attack1386363

1204IdempotentsUSU Local Contest. March 20022207229

1261TipsAutumn School Contest 20031564329

1268Little ChuUSU Championship 2003706724

1286Starship TravelUSU Personal Contest 2004784656

1343Fairy TaleUSU Championship 20041252416

1352Mersenne PrimesSpring School Contest 20053983132

1355Bald Spot RevisitedSpring School Contest 20052471212

1356Something EasierSpring School Contest 20051756298

1430Crime and PunishmentTimus Top Coders: First Challenge1108461

1456Jedi Riddle 2Timus Top Coders: Second Challenge669749

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest710639

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest481936

1593Square Country. Version 2564726

1598DSA Attack573961

1698Square Country 5Petrozavodsk Winter 2009. USU Contest638638

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1448266

1807Cartridges for MaximNEERC 2010 Eastern Subregional2361487

2047MathsUral Championship 2015517475

2070Interesting NumbersUral Regional School Programming Contest 20151029231

2102Michael and CryptographyUral FU Junior Championship 20161478144

2117Polyphemus' triplesUniversity-Academy Olympiad 2019293535

2124Algebra on SegmentPetrozavodsk Summer 2018. umnik_team contest1091345

2138The Good, the Bad and the UglyUral School Programming Contest 20191348111

2184Flint's Favorite NumberUral School Programming Contest 2024241405

2205Natural NumbersUniversity-Academy Olympiad 202291455

2206Runes in the Field 2University-Academy Olympiad 202222300

2208Two GiftsUniversity-Academy Olympiad 202351837

2211Integer TrianglesUniversity-Academy Olympiad 202322300

2220Reciprocal of GCDICPC Ural Regional Contest Qualifier 202581532
Solved problems: show | hide  •  Sort by: id | authors | difficulty
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