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Problem set. Number Theory Problems


1049Brave BalloonistsUSU Local Contest. March 20005374238

1086CryptographySpring School Contest 200110247112

1091Tmutarakan ExamsUSU Local Contest. March 20012209494

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001445095

1118Nontrivial NumbersAutumn School Contest 2001430299

1132Square Root658637

1133Fibonacci SequenceNEERC 2001 Central Subregional2307184

1141RSA Attack1155365

1204IdempotentsUSU Local Contest. March 20021867228

1261TipsAutumn School Contest 20031265345

1268Little ChuUSU Championship 2003558774

1286Starship TravelUSU Personal Contest 2004639681

1343Fairy TaleUSU Championship 20041139390

1352Mersenne PrimesSpring School Contest 20053392132

1355Bald Spot RevisitedSpring School Contest 20051978225

1356Something EasierSpring School Contest 20051244357

1430Crime and PunishmentTimus Top Coders: First Challenge920469

1456Jedi Riddle 2Timus Top Coders: Second Challenge545771

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest588621

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest368982

1593Square Country. Version 2427734

1598DSA Attack254148

1698Square Country 5Petrozavodsk Winter 2009. USU Contest535582

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1073266

1807Cartridges for MaximNEERC 2010 Eastern Subregional1921298

2047MathsUral Championship 2015324382

2070Interesting NumbersUral Regional School Programming Contest 2015581195

2102Michael and CryptographyUral FU Junior Championship 2016697122