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Problem set. Number Theory Problems


1049Brave BalloonistsUSU Local Contest. March 20005794241

1086CryptographySpring School Contest 200111679108

1091Tmutarakan ExamsUSU Local Contest. March 20012308515

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001492793

1118Nontrivial NumbersAutumn School Contest 20014525102

1132Square Root791578

1133Fibonacci SequenceNEERC 2001 Central Subregional2104219

1141RSA Attack1264363

1204IdempotentsUSU Local Contest. March 20022060225

1261TipsAutumn School Contest 20031423332

1268Little ChuUSU Championship 2003642730

1286Starship TravelUSU Personal Contest 2004708666

1343Fairy TaleUSU Championship 20041130424

1352Mersenne PrimesSpring School Contest 20053753129

1355Bald Spot RevisitedSpring School Contest 20052241215

1356Something EasierSpring School Contest 20051480325

1430Crime and PunishmentTimus Top Coders: First Challenge1019460

1456Jedi Riddle 2Timus Top Coders: Second Challenge609752

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest638636

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest416968

1593Square Country. Version 2502713

1598DSA Attack344562

1698Square Country 5Petrozavodsk Winter 2009. USU Contest585608

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1301255

1807Cartridges for MaximNEERC 2010 Eastern Subregional2181360

2047MathsUral Championship 2015426423

2070Interesting NumbersUral Regional School Programming Contest 2015838204

2102Michael and CryptographyUral FU Junior Championship 20161108130

2117Polyphemus' triplesUniversity academic school olympiad in informatics 2019164508

2124Algebra on SegmentPetrozavodsk Summer 2018. t.me/umnik_team Contest551325

2138The Good, the Bad and the UglyUral School Programming Contest 2019735102