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Problem set. Number Theory Problems


1049Brave BalloonistsUSU Local Contest. March 20005345238

1086CryptographySpring School Contest 200110065114

1091Tmutarakan ExamsUSU Local Contest. March 20012197494

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001441295

1118Nontrivial NumbersAutumn School Contest 2001425299

1132Square Root642649

1133Fibonacci SequenceNEERC 2001 Central Subregional2288184

1141RSA Attack1137369

1204IdempotentsUSU Local Contest. March 20021846229

1261TipsAutumn School Contest 20031254346

1268Little ChuUSU Championship 2003550781

1286Starship TravelUSU Personal Contest 2004633684

1343Fairy TaleUSU Championship 20041128391

1352Mersenne PrimesSpring School Contest 20053360132

1355Bald Spot RevisitedSpring School Contest 20051951227

1356Something EasierSpring School Contest 20051236358

1430Crime and PunishmentTimus Top Coders: First Challenge912470

1456Jedi Riddle 2Timus Top Coders: Second Challenge539775

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest581624

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest362991

1593Square Country. Version 2416746

1598DSA Attack254040

1698Square Country 5Petrozavodsk Winter 2009. USU Contest528584

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1055267

1807Cartridges for MaximNEERC 2010 Eastern Subregional1881308

2047MathsUral Championship 2015311386

2070Interesting NumbersUral Regional School Programming Contest 2015557196

2102Michael and CryptographyUral FU Junior Championship 2016657123