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Problem set. Number Theory Problems


1049Brave BalloonistsUSU Local Contest. March 20005775240

1086CryptographySpring School Contest 200111610108

1091Tmutarakan ExamsUSU Local Contest. March 20012302514

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001490193

1118Nontrivial NumbersAutumn School Contest 20014491102

1132Square Root788577

1133Fibonacci SequenceNEERC 2001 Central Subregional2091219

1141RSA Attack1258363

1204IdempotentsUSU Local Contest. March 20022053224

1261TipsAutumn School Contest 20031419331

1268Little ChuUSU Championship 2003637732

1286Starship TravelUSU Personal Contest 2004705666

1343Fairy TaleUSU Championship 20041120426

1352Mersenne PrimesSpring School Contest 20053728129

1355Bald Spot RevisitedSpring School Contest 20052224216

1356Something EasierSpring School Contest 20051472325

1430Crime and PunishmentTimus Top Coders: First Challenge1014459

1456Jedi Riddle 2Timus Top Coders: Second Challenge604754

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest634636

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest412970

1593Square Country. Version 2498713

1598DSA Attack344479

1698Square Country 5Petrozavodsk Winter 2009. USU Contest582606

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1292254

1807Cartridges for MaximNEERC 2010 Eastern Subregional2161358

2047MathsUral Championship 2015422418

2070Interesting NumbersUral Regional School Programming Contest 2015829201

2102Michael and CryptographyUral FU Junior Championship 20161099128

2117Polyphemus' triplesUniversity academic school olympiad in informatics 2019158501

2124Algebra on SegmentPetrozavodsk Summer 2018. t.me/umnik_team Contest541280

2138The Good, the Bad and the UglyUral School Programming Contest 2019700101