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Problem set. Number Theory Problems


IDTitleSourceAuthorsDifficulty

1049Brave BalloonistsUSU Local Contest. March 20005715239

1086CryptographySpring School Contest 200111437108

1091Tmutarakan ExamsUSU Local Contest. March 20012280512

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001485093

1118Nontrivial NumbersAutumn School Contest 20014440102

1132Square Root761589

1133Fibonacci SequenceNEERC 2001 Central Subregional2069219

1141RSA Attack1241363

1204IdempotentsUSU Local Contest. March 20022014226

1261TipsAutumn School Contest 20031383336

1268Little ChuUSU Championship 2003617746

1286Starship TravelUSU Personal Contest 2004681680

1343Fairy TaleUSU Championship 20041089433

1352Mersenne PrimesSpring School Contest 20053686129

1355Bald Spot RevisitedSpring School Contest 20052201215

1356Something EasierSpring School Contest 20051363347

1430Crime and PunishmentTimus Top Coders: First Challenge994463

1456Jedi Riddle 2Timus Top Coders: Second Challenge594756

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest625634

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest402978

1593Square Country. Version 2485717

1598DSA Attack324475

1698Square Country 5Petrozavodsk Winter 2009. USU Contest572604

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1253256

1807Cartridges for MaximNEERC 2010 Eastern Subregional2121347

2047MathsUral Championship 2015407411

2070Interesting NumbersUral Regional School Programming Contest 2015792199

2102Michael and CryptographyUral FU Junior Championship 20161056124

2117Polyphemus' triplesUniversity academic school olympiad in informatics 2019148467

2124Algebra on SegmentPetrozavodsk Summer 2018. t.me/umnik_team Contest481233

2138The Good, the Bad and the UglyUral School Programming Contest 2019587103