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Problem set. Number Theory Problems


1049Brave BalloonistsUSU Local Contest. March 20005690239

1086CryptographySpring School Contest 200111357108

1091Tmutarakan ExamsUSU Local Contest. March 20012337496

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001481193

1118Nontrivial NumbersAutumn School Contest 20014400102

1132Square Root756589

1133Fibonacci SequenceNEERC 2001 Central Subregional2054219

1141RSA Attack1232364

1204IdempotentsUSU Local Contest. March 20022003226

1261TipsAutumn School Contest 20031378335

1268Little ChuUSU Championship 2003614745

1286Starship TravelUSU Personal Contest 2004677680

1343Fairy TaleUSU Championship 20041085432

1352Mersenne PrimesSpring School Contest 20053655129

1355Bald Spot RevisitedSpring School Contest 20052182216

1356Something EasierSpring School Contest 20051352347

1430Crime and PunishmentTimus Top Coders: First Challenge991461

1456Jedi Riddle 2Timus Top Coders: Second Challenge590757

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest621634

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest401973

1593Square Country. Version 2475725

1598DSA Attack304597

1698Square Country 5Petrozavodsk Winter 2009. USU Contest572598

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1245255

1807Cartridges for MaximNEERC 2010 Eastern Subregional2111337

2047MathsUral Championship 2015401407

2070Interesting NumbersUral Regional School Programming Contest 2015776197

2102Michael and CryptographyUral FU Junior Championship 20161003126

2117Polyphemus' triplesUniversity academic school olympiad in informatics 2019142455

2124Algebra on SegmentPetrozavodsk Summer 2018. t.me/umnik_team Contest331555

2138The Good, the Bad and the UglyUral School Programming Contest 2019514108