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Problem set. Number Theory Problems


1049Brave BalloonistsUSU Local Contest. March 20005748239

1086CryptographySpring School Contest 200111528108

1091Tmutarakan ExamsUSU Local Contest. March 20012292512

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001487593

1118Nontrivial NumbersAutumn School Contest 20014470102

1132Square Root779579

1133Fibonacci SequenceNEERC 2001 Central Subregional2081219

1141RSA Attack1249363

1204IdempotentsUSU Local Contest. March 20022042224

1261TipsAutumn School Contest 20031409331

1268Little ChuUSU Championship 2003633732

1286Starship TravelUSU Personal Contest 2004698667

1343Fairy TaleUSU Championship 20041115425

1352Mersenne PrimesSpring School Contest 20053706129

1355Bald Spot RevisitedSpring School Contest 20052211215

1356Something EasierSpring School Contest 20051380344

1430Crime and PunishmentTimus Top Coders: First Challenge1003461

1456Jedi Riddle 2Timus Top Coders: Second Challenge599754

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest630634

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest405978

1593Square Country. Version 2494711

1598DSA Attack324572

1698Square Country 5Petrozavodsk Winter 2009. USU Contest578603

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1269255

1807Cartridges for MaximNEERC 2010 Eastern Subregional2151345

2047MathsUral Championship 2015414414

2070Interesting NumbersUral Regional School Programming Contest 2015809200

2102Michael and CryptographyUral FU Junior Championship 20161078125

2117Polyphemus' triplesUniversity academic school olympiad in informatics 2019153481

2124Algebra on SegmentPetrozavodsk Summer 2018. t.me/umnik_team Contest501269

2138The Good, the Bad and the UglyUral School Programming Contest 201966498