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Problem set. Number Theory Problems


IDTitleSourceAuthorsDifficulty

1049Brave BalloonistsUSU Local Contest. March 20005565240

1086CryptographySpring School Contest 200111011109

1091Tmutarakan ExamsUSU Local Contest. March 20012279501

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001471493

1118Nontrivial NumbersAutumn School Contest 20014308103

1132Square Root727603

1133Fibonacci SequenceNEERC 2001 Central Subregional2425183

1141RSA Attack1201367

1204IdempotentsUSU Local Contest. March 20021957227

1261TipsAutumn School Contest 20031343339

1268Little ChuUSU Championship 2003595758

1286Starship TravelUSU Personal Contest 2004666681

1343Fairy TaleUSU Championship 20041058437

1352Mersenne PrimesSpring School Contest 20053586130

1355Bald Spot RevisitedSpring School Contest 20052124219

1356Something EasierSpring School Contest 20051318351

1430Crime and PunishmentTimus Top Coders: First Challenge971464

1456Jedi Riddle 2Timus Top Coders: Second Challenge576763

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest613630

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest386990

1593Square Country. Version 2450747

1598DSA Attack294451

1698Square Country 5Petrozavodsk Winter 2009. USU Contest562594

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1216254

1807Cartridges for MaximNEERC 2010 Eastern Subregional2051333

2047MathsUral Championship 2015379403

2070Interesting NumbersUral Regional School Programming Contest 2015714200

2102Michael and CryptographyUral FU Junior Championship 2016917126

2117Polyphemus' triplesUniversity academic school olympiad in informatics 2019118448

2124Algebra on SegmentPetrozavodsk Summer 2018. t.me/umnik_team Contest271488

2138The Good, the Bad and the UglyUral School Programming Contest 2019338128