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Problem set. Number Theory Problems


IDTitleSourceAuthorsDifficulty

1049Brave BalloonistsUSU Local Contest. March 20005562240

1086CryptographySpring School Contest 200110999110

1091Tmutarakan ExamsUSU Local Contest. March 20012278501

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001471193

1118Nontrivial NumbersAutumn School Contest 20014302103

1132Square Root726604

1133Fibonacci SequenceNEERC 2001 Central Subregional2420183

1141RSA Attack1201367

1204IdempotentsUSU Local Contest. March 20021956227

1261TipsAutumn School Contest 20031341339

1268Little ChuUSU Championship 2003595757

1286Starship TravelUSU Personal Contest 2004666681

1343Fairy TaleUSU Championship 20041057437

1352Mersenne PrimesSpring School Contest 20053585130

1355Bald Spot RevisitedSpring School Contest 20052123219

1356Something EasierSpring School Contest 20051316352

1430Crime and PunishmentTimus Top Coders: First Challenge970464

1456Jedi Riddle 2Timus Top Coders: Second Challenge574765

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest613629

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest386990

1593Square Country. Version 2449748

1598DSA Attack294438

1698Square Country 5Petrozavodsk Winter 2009. USU Contest561595

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1213254

1807Cartridges for MaximNEERC 2010 Eastern Subregional2041338

2047MathsUral Championship 2015376405

2070Interesting NumbersUral Regional School Programming Contest 2015712200

2102Michael and CryptographyUral FU Junior Championship 2016913125

2117Polyphemus' triplesUniversity academic school olympiad in informatics 2019118444

2124Algebra on SegmentPetrozavodsk Summer 2018. t.me/umnik_team Contest271473

2138The Good, the Bad and the UglyUral School Programming Contest 2019334128