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Problem set. Number Theory Problems


1049Brave BalloonistsUSU Local Contest. March 20005701239

1086CryptographySpring School Contest 200111381108

1091Tmutarakan ExamsUSU Local Contest. March 20012340497

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001482093

1118Nontrivial NumbersAutumn School Contest 20014420102

1132Square Root756591

1133Fibonacci SequenceNEERC 2001 Central Subregional2056219

1141RSA Attack1233364

1204IdempotentsUSU Local Contest. March 20022006226

1261TipsAutumn School Contest 20031380335

1268Little ChuUSU Championship 2003617743

1286Starship TravelUSU Personal Contest 2004679679

1343Fairy TaleUSU Championship 20041085433

1352Mersenne PrimesSpring School Contest 20053666129

1355Bald Spot RevisitedSpring School Contest 20052188216

1356Something EasierSpring School Contest 20051356347

1430Crime and PunishmentTimus Top Coders: First Challenge992462

1456Jedi Riddle 2Timus Top Coders: Second Challenge591757

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest623633

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest402973

1593Square Country. Version 2475727

1598DSA Attack304629

1698Square Country 5Petrozavodsk Winter 2009. USU Contest572600

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1249255

1807Cartridges for MaximNEERC 2010 Eastern Subregional2111342

2047MathsUral Championship 2015404407

2070Interesting NumbersUral Regional School Programming Contest 2015783197

2102Michael and CryptographyUral FU Junior Championship 20161034123

2117Polyphemus' triplesUniversity academic school olympiad in informatics 2019145455

2124Algebra on SegmentPetrozavodsk Summer 2018. t.me/umnik_team Contest331589

2138The Good, the Bad and the UglyUral School Programming Contest 2019546104