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Problem set. Number Theory Problems


1049Brave BalloonistsUSU Local Contest. March 20005538240

1086CryptographySpring School Contest 200110922110

1091Tmutarakan ExamsUSU Local Contest. March 20012272500

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001468693

1118Nontrivial NumbersAutumn School Contest 20014283103

1132Square Root719607

1133Fibonacci SequenceNEERC 2001 Central Subregional2408183

1141RSA Attack1197367

1204IdempotentsUSU Local Contest. March 20021949227

1261TipsAutumn School Contest 20031335339

1268Little ChuUSU Championship 2003593756

1286Starship TravelUSU Personal Contest 2004665679

1343Fairy TaleUSU Championship 20041047439

1352Mersenne PrimesSpring School Contest 20053570130

1355Bald Spot RevisitedSpring School Contest 20052105220

1356Something EasierSpring School Contest 20051308352

1430Crime and PunishmentTimus Top Coders: First Challenge963465

1456Jedi Riddle 2Timus Top Coders: Second Challenge571766

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest608631

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest384989

1593Square Country. Version 2449742

1598DSA Attack294361

1698Square Country 5Petrozavodsk Winter 2009. USU Contest552600

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1183258

1807Cartridges for MaximNEERC 2010 Eastern Subregional2021338

2047MathsUral Championship 2015367406

2070Interesting NumbersUral Regional School Programming Contest 2015694200

2102Michael and CryptographyUral FU Junior Championship 2016894125

2117Polyphemus' triplesUniversity academic school olympiad in informatics 2019110445

2124Algebra on SegmentPetrozavodsk Summer 2018. t.me/umnik_team Contest241503

2138The Good, the Bad and the UglyUral School Programming Contest 2019267147