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Problem set. Number Theory Problems


1049Brave BalloonistsUSU Local Contest. March 20006014246

1086CryptographySpring School Contest 200112626105

1091Tmutarakan ExamsUSU Local Contest. March 20012427520

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001517794

1118Nontrivial NumbersAutumn School Contest 20014737103

1132Square Root866559

1133Fibonacci SequenceNEERC 2001 Central Subregional2196222

1141RSA Attack1337364

1204IdempotentsUSU Local Contest. March 20022151228

1261TipsAutumn School Contest 20031517329

1268Little ChuUSU Championship 2003672737

1286Starship TravelUSU Personal Contest 2004755660

1343Fairy TaleUSU Championship 20041210418

1352Mersenne PrimesSpring School Contest 20053913130

1355Bald Spot RevisitedSpring School Contest 20052408211

1356Something EasierSpring School Contest 20051719295

1430Crime and PunishmentTimus Top Coders: First Challenge1070463

1456Jedi Riddle 2Timus Top Coders: Second Challenge651745

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest688633

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest464932

1593Square Country. Version 2528738

1598DSA Attack434550

1698Square Country 5Petrozavodsk Winter 2009. USU Contest612633

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1392262

1807Cartridges for MaximNEERC 2010 Eastern Subregional2301438

2047MathsUral Championship 2015480460

2070Interesting NumbersUral Regional School Programming Contest 2015970219

2102Michael and CryptographyUral FU Junior Championship 20161376136

2117Polyphemus' triplesUniversity academic school olympiad in informatics 2019246525

2124Algebra on SegmentPetrozavodsk Summer 2018. umnik_team Contest931285

2138The Good, the Bad and the UglyUral School Programming Contest 20191200101