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Problem set. Number Theory Problems


1049Brave BalloonistsUSU Local Contest. March 20005962245

1086CryptographySpring School Contest 200112448106

1091Tmutarakan ExamsUSU Local Contest. March 20012386521

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001512494

1118Nontrivial NumbersAutumn School Contest 20014691103

1132Square Root854560

1133Fibonacci SequenceNEERC 2001 Central Subregional2181221

1141RSA Attack1315365

1204IdempotentsUSU Local Contest. March 20022128227

1261TipsAutumn School Contest 20031495330

1268Little ChuUSU Championship 2003664736

1286Starship TravelUSU Personal Contest 2004728675

1343Fairy TaleUSU Championship 20041192419

1352Mersenne PrimesSpring School Contest 20053882130

1355Bald Spot RevisitedSpring School Contest 20052386210

1356Something EasierSpring School Contest 20051705294

1430Crime and PunishmentTimus Top Coders: First Challenge1056463

1456Jedi Riddle 2Timus Top Coders: Second Challenge643744

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest683628

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest459927

1593Square Country. Version 2522732

1598DSA Attack374929

1698Square Country 5Petrozavodsk Winter 2009. USU Contest605628

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1377259

1807Cartridges for MaximNEERC 2010 Eastern Subregional2271421

2047MathsUral Championship 2015470450

2070Interesting NumbersUral Regional School Programming Contest 2015944215

2102Michael and CryptographyUral FU Junior Championship 20161345132

2117Polyphemus' triplesUniversity academic school olympiad in informatics 2019222533

2124Algebra on SegmentPetrozavodsk Summer 2018. umnik_team Contest911203

2138The Good, the Bad and the UglyUral School Programming Contest 20191113100