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Problem set. Number Theory Problems


IDTitleSourceAuthorsDifficulty

1049Brave BalloonistsUSU Local Contest. March 20005881242

1086CryptographySpring School Contest 200112066106

1091Tmutarakan ExamsUSU Local Contest. March 20012344519

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001502093

1118Nontrivial NumbersAutumn School Contest 20014601102

1132Square Root831563

1133Fibonacci SequenceNEERC 2001 Central Subregional2140220

1141RSA Attack1288365

1204IdempotentsUSU Local Contest. March 20022099226

1261TipsAutumn School Contest 20031453332

1268Little ChuUSU Championship 2003653733

1286Starship TravelUSU Personal Contest 2004716673

1343Fairy TaleUSU Championship 20041163421

1352Mersenne PrimesSpring School Contest 20053815129

1355Bald Spot RevisitedSpring School Contest 20052298214

1356Something EasierSpring School Contest 20051668294

1430Crime and PunishmentTimus Top Coders: First Challenge1039460

1456Jedi Riddle 2Timus Top Coders: Second Challenge628745

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest658634

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest453914

1593Square Country. Version 2511724

1598DSA Attack374596

1698Square Country 5Petrozavodsk Winter 2009. USU Contest597616

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1340257

1807Cartridges for MaximNEERC 2010 Eastern Subregional2241382

2047MathsUral Championship 2015450435

2070Interesting NumbersUral Regional School Programming Contest 2015885211

2102Michael and CryptographyUral FU Junior Championship 20161232130

2117Polyphemus' triplesUniversity academic school olympiad in informatics 2019188534

2124Algebra on SegmentPetrozavodsk Summer 2018. t.me/umnik_team Contest791164

2138The Good, the Bad and the UglyUral School Programming Contest 2019929100