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Problem set. Number Theory Problems


IDTitleSourceAuthorsDifficulty

1049Brave BalloonistsUSU Local Contest. March 20005509239

1086CryptographySpring School Contest 200110782110

1091Tmutarakan ExamsUSU Local Contest. March 20012255500

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001464794

1118Nontrivial NumbersAutumn School Contest 2001454796

1132Square Root709610

1133Fibonacci SequenceNEERC 2001 Central Subregional2389183

1141RSA Attack1184368

1204IdempotentsUSU Local Contest. March 20021929228

1261TipsAutumn School Contest 20031320340

1268Little ChuUSU Championship 2003584762

1286Starship TravelUSU Personal Contest 2004655684

1343Fairy TaleUSU Championship 20041175389

1352Mersenne PrimesSpring School Contest 20053550129

1355Bald Spot RevisitedSpring School Contest 20052088220

1356Something EasierSpring School Contest 20051296353

1430Crime and PunishmentTimus Top Coders: First Challenge953466

1456Jedi Riddle 2Timus Top Coders: Second Challenge565767

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest601631

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest383982

1593Square Country. Version 2442745

1598DSA Attack284337

1698Square Country 5Petrozavodsk Winter 2009. USU Contest546599

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1163259

1807Cartridges for MaximNEERC 2010 Eastern Subregional1971348

2047MathsUral Championship 2015359400

2070Interesting NumbersUral Regional School Programming Contest 2015677197

2102Michael and CryptographyUral FU Junior Championship 2016923115

2117Polyphemus' triplesUniversity academic school olympiad in informatics 201976550

2124Algebra on SegmentPetrozavodsk Summer 2018. t.me/umnik_team Contest201501