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Problem set. Number Theory Problems


IDTitleSourceAuthorsDifficulty

1049Brave BalloonistsUSU Local Contest. March 20005524240

1086CryptographySpring School Contest 200110875110

1091Tmutarakan ExamsUSU Local Contest. March 20012261500

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001467193

1118Nontrivial NumbersAutumn School Contest 20014263103

1132Square Root715608

1133Fibonacci SequenceNEERC 2001 Central Subregional2398183

1141RSA Attack1189368

1204IdempotentsUSU Local Contest. March 20021938227

1261TipsAutumn School Contest 20031330339

1268Little ChuUSU Championship 2003589758

1286Starship TravelUSU Personal Contest 2004660681

1343Fairy TaleUSU Championship 20041042439

1352Mersenne PrimesSpring School Contest 20053560130

1355Bald Spot RevisitedSpring School Contest 20052099219

1356Something EasierSpring School Contest 20051303352

1430Crime and PunishmentTimus Top Coders: First Challenge961464

1456Jedi Riddle 2Timus Top Coders: Second Challenge568766

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest601635

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest383987

1593Square Country. Version 2446743

1598DSA Attack284407

1698Square Country 5Petrozavodsk Winter 2009. USU Contest550598

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1175258

1807Cartridges for MaximNEERC 2010 Eastern Subregional2011334

2047MathsUral Championship 2015362404

2070Interesting NumbersUral Regional School Programming Contest 2015685199

2102Michael and CryptographyUral FU Junior Championship 2016867125

2117Polyphemus' triplesUniversity academic school olympiad in informatics 2019100458

2124Algebra on SegmentPetrozavodsk Summer 2018. t.me/umnik_team Contest231457

2138The Good, the Bad and the UglyUral School Programming Contest 2019169210