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Problem set. Number Theory Problems


IDTitleSourceAuthorsDifficulty

1049Brave BalloonistsUSU Local Contest. March 20005755239

1086CryptographySpring School Contest 200111549108

1091Tmutarakan ExamsUSU Local Contest. March 20012295513

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001488593

1118Nontrivial NumbersAutumn School Contest 20014476102

1132Square Root781579

1133Fibonacci SequenceNEERC 2001 Central Subregional2086218

1141RSA Attack1252363

1204IdempotentsUSU Local Contest. March 20022046224

1261TipsAutumn School Contest 20031414331

1268Little ChuUSU Championship 2003634732

1286Starship TravelUSU Personal Contest 2004700667

1343Fairy TaleUSU Championship 20041117425

1352Mersenne PrimesSpring School Contest 20053712129

1355Bald Spot RevisitedSpring School Contest 20052218215

1356Something EasierSpring School Contest 20051384344

1430Crime and PunishmentTimus Top Coders: First Challenge1006461

1456Jedi Riddle 2Timus Top Coders: Second Challenge601753

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest632633

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest408973

1593Square Country. Version 2495711

1598DSA Attack334493

1698Square Country 5Petrozavodsk Winter 2009. USU Contest579604

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1277255

1807Cartridges for MaximNEERC 2010 Eastern Subregional2151349

2047MathsUral Championship 2015420411

2070Interesting NumbersUral Regional School Programming Contest 2015814200

2102Michael and CryptographyUral FU Junior Championship 20161083126

2117Polyphemus' triplesUniversity academic school olympiad in informatics 2019155483

2124Algebra on SegmentPetrozavodsk Summer 2018. t.me/umnik_team Contest531231

2138The Good, the Bad and the UglyUral School Programming Contest 201967498