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Problem set. Number Theory Problems


1049Brave BalloonistsUSU Local Contest. March 20005420238

1086CryptographySpring School Contest 200110419112

1091Tmutarakan ExamsUSU Local Contest. March 20012222496

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001451094

1118Nontrivial NumbersAutumn School Contest 2001439897

1132Square Root667635

1133Fibonacci SequenceNEERC 2001 Central Subregional2330184

1141RSA Attack1159368

1204IdempotentsUSU Local Contest. March 20021885228

1261TipsAutumn School Contest 20031284343

1268Little ChuUSU Championship 2003568768

1286Starship TravelUSU Personal Contest 2004647679

1343Fairy TaleUSU Championship 20041148390

1352Mersenne PrimesSpring School Contest 20053450131

1355Bald Spot RevisitedSpring School Contest 20052012224

1356Something EasierSpring School Contest 20051263355

1430Crime and PunishmentTimus Top Coders: First Challenge930469

1456Jedi Riddle 2Timus Top Coders: Second Challenge551771

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest592625

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest373982

1593Square Country. Version 2431739

1598DSA Attack264212

1698Square Country 5Petrozavodsk Winter 2009. USU Contest540586

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1100264

1807Cartridges for MaximNEERC 2010 Eastern Subregional1941312

2047MathsUral Championship 2015337387

2070Interesting NumbersUral Regional School Programming Contest 2015612196

2102Michael and CryptographyUral FU Junior Championship 2016788116