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Problem set. Number Theory Problems


IDTitleSourceAuthorsDifficulty

1049Brave BalloonistsUSU Local Contest. March 20005622240

1086CryptographySpring School Contest 200111206109

1091Tmutarakan ExamsUSU Local Contest. March 20012305500

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001477593

1118Nontrivial NumbersAutumn School Contest 20014374102

1132Square Root744595

1133Fibonacci SequenceNEERC 2001 Central Subregional2028220

1141RSA Attack1223364

1204IdempotentsUSU Local Contest. March 20021988226

1261TipsAutumn School Contest 20031361337

1268Little ChuUSU Championship 2003608748

1286Starship TravelUSU Personal Contest 2004673680

1343Fairy TaleUSU Championship 20041075433

1352Mersenne PrimesSpring School Contest 20053631129

1355Bald Spot RevisitedSpring School Contest 20052157217

1356Something EasierSpring School Contest 20051342348

1430Crime and PunishmentTimus Top Coders: First Challenge987460

1456Jedi Riddle 2Timus Top Coders: Second Challenge586757

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest617633

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest396977

1593Square Country. Version 2471724

1598DSA Attack304493

1698Square Country 5Petrozavodsk Winter 2009. USU Contest569596

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1237254

1807Cartridges for MaximNEERC 2010 Eastern Subregional2071345

2047MathsUral Championship 2015397400

2070Interesting NumbersUral Regional School Programming Contest 2015755197

2102Michael and CryptographyUral FU Junior Championship 2016970125

2117Polyphemus' triplesUniversity academic school olympiad in informatics 2019132453

2124Algebra on SegmentPetrozavodsk Summer 2018. t.me/umnik_team Contest321478

2138The Good, the Bad and the UglyUral School Programming Contest 2019448113