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Problem set. Number Theory Problems


1049Brave BalloonistsUSU Local Contest. March 20005471239

1086CryptographySpring School Contest 200110629111

1091Tmutarakan ExamsUSU Local Contest. March 20012241499

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001459394

1118Nontrivial NumbersAutumn School Contest 2001448097

1132Square Root695618

1133Fibonacci SequenceNEERC 2001 Central Subregional2370183

1141RSA Attack1172369

1204IdempotentsUSU Local Contest. March 20021907229

1261TipsAutumn School Contest 20031305342

1268Little ChuUSU Championship 2003580762

1286Starship TravelUSU Personal Contest 2004653681

1343Fairy TaleUSU Championship 20041159391

1352Mersenne PrimesSpring School Contest 20053508130

1355Bald Spot RevisitedSpring School Contest 20052055222

1356Something EasierSpring School Contest 20051295351

1430Crime and PunishmentTimus Top Coders: First Challenge945467

1456Jedi Riddle 2Timus Top Coders: Second Challenge559770

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest598629

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest376990

1593Square Country. Version 2434749

1598DSA Attack284212

1698Square Country 5Petrozavodsk Winter 2009. USU Contest545593

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1144260

1807Cartridges for MaximNEERC 2010 Eastern Subregional1961335

2047MathsUral Championship 2015349398

2070Interesting NumbersUral Regional School Programming Contest 2015644200

2102Michael and CryptographyUral FU Junior Championship 2016875115

2117Polyphemus' triplesUniversity academic school olympiad in informatics 201956635

2124Algebra on SegmentPetrozavodsk Summer 2018. t.me/umnik_team Contest151584