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Problem set. Number Theory Problems


IDTitleSourceAuthorsDifficulty

1086CryptographySpring School Contest 200112594105

1049Brave BalloonistsUSU Local Contest. March 20006005245

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001516694

1118Nontrivial NumbersAutumn School Contest 20014729103

1352Mersenne PrimesSpring School Contest 20053912130

1355Bald Spot RevisitedSpring School Contest 20052405211

1091Tmutarakan ExamsUSU Local Contest. March 20012399524

1133Fibonacci SequenceNEERC 2001 Central Subregional2190222

1204IdempotentsUSU Local Contest. March 20022148227

1356Something EasierSpring School Contest 20051716295

1261TipsAutumn School Contest 20031502331

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1391261

2102Michael and CryptographyUral FU Junior Championship 20161375134

1141RSA Attack1334364

1343Fairy TaleUSU Championship 20041206418

2138The Good, the Bad and the UglyUral School Programming Contest 20191188100

1430Crime and PunishmentTimus Top Coders: First Challenge1066463

2070Interesting NumbersUral Regional School Programming Contest 2015960219

1132Square Root864559

1286Starship TravelUSU Personal Contest 2004739672

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest687631

1268Little ChuUSU Championship 2003672735

1456Jedi Riddle 2Timus Top Coders: Second Challenge649745

1698Square Country 5Petrozavodsk Winter 2009. USU Contest611631

1593Square Country. Version 2529733

2047MathsUral Championship 2015478457

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest464929

2117Polyphemus' triplesUniversity academic school olympiad in informatics 2019247512

1807Cartridges for MaximNEERC 2010 Eastern Subregional2311423

2124Algebra on SegmentPetrozavodsk Summer 2018. umnik_team Contest931258

1598DSA Attack424591