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Problem set. Number Theory Problems


1049Brave BalloonistsUSU Local Contest. March 20005595240

1086CryptographySpring School Contest 200111088109

1091Tmutarakan ExamsUSU Local Contest. March 20012288501

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001473893

1118Nontrivial NumbersAutumn School Contest 20014333103

1132Square Root736598

1133Fibonacci SequenceNEERC 2001 Central Subregional2441182

1141RSA Attack1212365

1204IdempotentsUSU Local Contest. March 20021966227

1261TipsAutumn School Contest 20031353337

1268Little ChuUSU Championship 2003599755

1286Starship TravelUSU Personal Contest 2004670680

1343Fairy TaleUSU Championship 20041069434

1352Mersenne PrimesSpring School Contest 20053604130

1355Bald Spot RevisitedSpring School Contest 20052143217

1356Something EasierSpring School Contest 20051326350

1430Crime and PunishmentTimus Top Coders: First Challenge977463

1456Jedi Riddle 2Timus Top Coders: Second Challenge582758

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest615631

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest391983

1593Square Country. Version 2457740

1598DSA Attack304402

1698Square Country 5Petrozavodsk Winter 2009. USU Contest565595

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1226253

1807Cartridges for MaximNEERC 2010 Eastern Subregional2051343

2047MathsUral Championship 2015384404

2070Interesting NumbersUral Regional School Programming Contest 2015735198

2102Michael and CryptographyUral FU Junior Championship 2016941125

2117Polyphemus' triplesUniversity academic school olympiad in informatics 2019126443

2124Algebra on SegmentPetrozavodsk Summer 2018. t.me/umnik_team Contest281525

2138The Good, the Bad and the UglyUral School Programming Contest 2019392118