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Problem set. Number Theory Problems


1049Brave BalloonistsUSU Local Contest. March 20005939244

1086CryptographySpring School Contest 200112344106

1091Tmutarakan ExamsUSU Local Contest. March 20012376520

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001508394

1118Nontrivial NumbersAutumn School Contest 20014660103

1132Square Root844562

1133Fibonacci SequenceNEERC 2001 Central Subregional2165221

1141RSA Attack1311364

1204IdempotentsUSU Local Contest. March 20022120227

1261TipsAutumn School Contest 20031488329

1268Little ChuUSU Championship 2003663733

1286Starship TravelUSU Personal Contest 2004728671

1343Fairy TaleUSU Championship 20041175422

1352Mersenne PrimesSpring School Contest 20053855130

1355Bald Spot RevisitedSpring School Contest 20052368211

1356Something EasierSpring School Contest 20051697293

1430Crime and PunishmentTimus Top Coders: First Challenge1051462

1456Jedi Riddle 2Timus Top Coders: Second Challenge640742

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest678627

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest459919

1593Square Country. Version 2517732

1598DSA Attack374819

1698Square Country 5Petrozavodsk Winter 2009. USU Contest603624

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1363259

1807Cartridges for MaximNEERC 2010 Eastern Subregional2271402

2047MathsUral Championship 2015463445

2070Interesting NumbersUral Regional School Programming Contest 2015936211

2102Michael and CryptographyUral FU Junior Championship 20161322130

2117Polyphemus' triplesUniversity academic school olympiad in informatics 2019213528

2124Algebra on SegmentPetrozavodsk Summer 2018. t.me/umnik_team Contest911144

2138The Good, the Bad and the UglyUral School Programming Contest 2019105499