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Problem set. Number Theory Problems


1049Brave BalloonistsUSU Local Contest. March 20005858241

1086CryptographySpring School Contest 200111931107

1091Tmutarakan ExamsUSU Local Contest. March 20012338516

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001498793

1118Nontrivial NumbersAutumn School Contest 20014574102

1132Square Root823564

1133Fibonacci SequenceNEERC 2001 Central Subregional2126220

1141RSA Attack1280364

1204IdempotentsUSU Local Contest. March 20022084225

1261TipsAutumn School Contest 20031443332

1268Little ChuUSU Championship 2003652729

1286Starship TravelUSU Personal Contest 2004715668

1343Fairy TaleUSU Championship 20041151422

1352Mersenne PrimesSpring School Contest 20053783129

1355Bald Spot RevisitedSpring School Contest 20052278214

1356Something EasierSpring School Contest 20051543316

1430Crime and PunishmentTimus Top Coders: First Challenge1033460

1456Jedi Riddle 2Timus Top Coders: Second Challenge618751

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest654632

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest449914

1593Square Country. Version 2508720

1598DSA Attack374478

1698Square Country 5Petrozavodsk Winter 2009. USU Contest592614

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1327256

1807Cartridges for MaximNEERC 2010 Eastern Subregional2211379

2047MathsUral Championship 2015448424

2070Interesting NumbersUral Regional School Programming Contest 2015864209

2102Michael and CryptographyUral FU Junior Championship 20161209128

2117Polyphemus' triplesUniversity academic school olympiad in informatics 2019178529

2124Algebra on SegmentPetrozavodsk Summer 2018. t.me/umnik_team Contest761131

2138The Good, the Bad and the UglyUral School Programming Contest 2019856101