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Problem set. Number Theory Problems


IDTitleSourceAuthorsDifficulty

1049Brave BalloonistsUSU Local Contest. March 20005727239

1086CryptographySpring School Contest 200111470108

1091Tmutarakan ExamsUSU Local Contest. March 20012287512

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001486793

1118Nontrivial NumbersAutumn School Contest 20014457102

1132Square Root763590

1133Fibonacci SequenceNEERC 2001 Central Subregional2076218

1141RSA Attack1247363

1204IdempotentsUSU Local Contest. March 20022024225

1261TipsAutumn School Contest 20031386336

1268Little ChuUSU Championship 2003621743

1286Starship TravelUSU Personal Contest 2004682681

1343Fairy TaleUSU Championship 20041094432

1352Mersenne PrimesSpring School Contest 20053695129

1355Bald Spot RevisitedSpring School Contest 20052208215

1356Something EasierSpring School Contest 20051365347

1430Crime and PunishmentTimus Top Coders: First Challenge1000461

1456Jedi Riddle 2Timus Top Coders: Second Challenge597755

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest629633

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest403979

1593Square Country. Version 2492710

1598DSA Attack324525

1698Square Country 5Petrozavodsk Winter 2009. USU Contest575604

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1263255

1807Cartridges for MaximNEERC 2010 Eastern Subregional2151337

2047MathsUral Championship 2015413410

2070Interesting NumbersUral Regional School Programming Contest 2015800200

2102Michael and CryptographyUral FU Junior Championship 20161066124

2117Polyphemus' triplesUniversity academic school olympiad in informatics 2019150476

2124Algebra on SegmentPetrozavodsk Summer 2018. t.me/umnik_team Contest491253

2138The Good, the Bad and the UglyUral School Programming Contest 201963199