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Problem set. Number Theory Problems


1049Brave BalloonistsUSU Local Contest. March 20005390238

1086CryptographySpring School Contest 200110332112

1091Tmutarakan ExamsUSU Local Contest. March 20012217495

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001447795

1118Nontrivial NumbersAutumn School Contest 2001436798

1132Square Root662636

1133Fibonacci SequenceNEERC 2001 Central Subregional2313184

1141RSA Attack1157367

1204IdempotentsUSU Local Contest. March 20021872229

1261TipsAutumn School Contest 20031271345

1268Little ChuUSU Championship 2003562772

1286Starship TravelUSU Personal Contest 2004642681

1343Fairy TaleUSU Championship 20041143390

1352Mersenne PrimesSpring School Contest 20053412132

1355Bald Spot RevisitedSpring School Contest 20051989225

1356Something EasierSpring School Contest 20051252357

1430Crime and PunishmentTimus Top Coders: First Challenge927468

1456Jedi Riddle 2Timus Top Coders: Second Challenge548771

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest590623

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest371980

1593Square Country. Version 2429737

1598DSA Attack264116

1698Square Country 5Petrozavodsk Winter 2009. USU Contest538583

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1085265

1807Cartridges for MaximNEERC 2010 Eastern Subregional1931304

2047MathsUral Championship 2015332382

2070Interesting NumbersUral Regional School Programming Contest 2015596195

2102Michael and CryptographyUral FU Junior Championship 2016750117