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Problem set. Number Theory Problems


1049Brave BalloonistsUSU Local Contest. March 20005439239

1086CryptographySpring School Contest 200110533111

1091Tmutarakan ExamsUSU Local Contest. March 20012229498

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001455494

1118Nontrivial NumbersAutumn School Contest 2001444097

1132Square Root683624

1133Fibonacci SequenceNEERC 2001 Central Subregional2348183

1141RSA Attack1166368

1204IdempotentsUSU Local Contest. March 20021892229

1261TipsAutumn School Contest 20031287344

1268Little ChuUSU Championship 2003572767

1286Starship TravelUSU Personal Contest 2004647683

1343Fairy TaleUSU Championship 20041153391

1352Mersenne PrimesSpring School Contest 20053476130

1355Bald Spot RevisitedSpring School Contest 20052027223

1356Something EasierSpring School Contest 20051280353

1430Crime and PunishmentTimus Top Coders: First Challenge936468

1456Jedi Riddle 2Timus Top Coders: Second Challenge554771

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest596625

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest375984

1593Square Country. Version 2433743

1598DSA Attack264313

1698Square Country 5Petrozavodsk Winter 2009. USU Contest543588

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1124261

1807Cartridges for MaximNEERC 2010 Eastern Subregional1941328

2047MathsUral Championship 2015341393

2070Interesting NumbersUral Regional School Programming Contest 2015628197

2102Michael and CryptographyUral FU Junior Championship 2016839114

2117Polyphemus' triplesUniversity academic school olympiad in informatics 201929936