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Problem set. Number Theory Problems


IDTitleSourceAuthorsDifficulty

1049Brave BalloonistsUSU Local Contest. March 20005627240

1086CryptographySpring School Contest 200111225108

1091Tmutarakan ExamsUSU Local Contest. March 20012309500

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001478393

1118Nontrivial NumbersAutumn School Contest 20014379102

1132Square Root747593

1133Fibonacci SequenceNEERC 2001 Central Subregional2030220

1141RSA Attack1225364

1204IdempotentsUSU Local Contest. March 20021989226

1261TipsAutumn School Contest 20031363337

1268Little ChuUSU Championship 2003608749

1286Starship TravelUSU Personal Contest 2004673681

1343Fairy TaleUSU Championship 20041076433

1352Mersenne PrimesSpring School Contest 20053636129

1355Bald Spot RevisitedSpring School Contest 20052161217

1356Something EasierSpring School Contest 20051342348

1430Crime and PunishmentTimus Top Coders: First Challenge987461

1456Jedi Riddle 2Timus Top Coders: Second Challenge586757

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest618632

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest396978

1593Square Country. Version 2471725

1598DSA Attack304502

1698Square Country 5Petrozavodsk Winter 2009. USU Contest570595

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1238254

1807Cartridges for MaximNEERC 2010 Eastern Subregional2081341

2047MathsUral Championship 2015397401

2070Interesting NumbersUral Regional School Programming Contest 2015757197

2102Michael and CryptographyUral FU Junior Championship 2016974125

2117Polyphemus' triplesUniversity academic school olympiad in informatics 2019135447

2124Algebra on SegmentPetrozavodsk Summer 2018. t.me/umnik_team Contest331454

2138The Good, the Bad and the UglyUral School Programming Contest 2019459111