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Problem set. Number Theory Problems


IDTitleSourceAuthorsDifficulty

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001526294

1118Nontrivial NumbersAutumn School Contest 20014842103

1086CryptographySpring School Contest 200112833106

2138The Good, the Bad and the UglyUral School Programming Contest 20191311107

1352Mersenne PrimesSpring School Contest 20053962131

2102Michael and CryptographyUral FU Junior Championship 20161442141

1355Bald Spot RevisitedSpring School Contest 20052454211

1133Fibonacci SequenceNEERC 2001 Central Subregional2233223

2070Interesting NumbersUral Regional School Programming Contest 20151001228

1204IdempotentsUSU Local Contest. March 20022181230

1049Brave BalloonistsUSU Local Contest. March 20006095248

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1421266

1356Something EasierSpring School Contest 20051745296

1261TipsAutumn School Contest 20031548329

1141RSA Attack1359366

1343Fairy TaleUSU Championship 20041238417

1430Crime and PunishmentTimus Top Coders: First Challenge1088464

2047MathsUral Championship 2015503471

1091Tmutarakan ExamsUSU Local Contest. March 20012455525

2117Polyphemus' triplesUniversity academic school olympiad in informatics 2019275534

1132Square Root898551

1698Square Country 5Petrozavodsk Winter 2009. USU Contest629636

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest696642

1286Starship TravelUSU Personal Contest 2004770660

1268Little ChuUSU Championship 2003688735

1593Square Country. Version 2544739

1456Jedi Riddle 2Timus Top Coders: Second Challenge663747

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest477931

2124Algebra on SegmentPetrozavodsk Summer 2018. umnik_team Contest1011353

1807Cartridges for MaximNEERC 2010 Eastern Subregional2331475

2184Flint's Favorite NumberUral School Programming Contest 2024131591

1598DSA Attack454668