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Problem set. Number Theory Problems


1049Brave BalloonistsUSU Local Contest. March 20005921244

1086CryptographySpring School Contest 200112301106

1091Tmutarakan ExamsUSU Local Contest. March 20012356522

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001506394

1118Nontrivial NumbersAutumn School Contest 20014647103

1132Square Root838564

1133Fibonacci SequenceNEERC 2001 Central Subregional2159221

1141RSA Attack1296366

1204IdempotentsUSU Local Contest. March 20022115226

1261TipsAutumn School Contest 20031465333

1268Little ChuUSU Championship 2003660733

1286Starship TravelUSU Personal Contest 2004724672

1343Fairy TaleUSU Championship 20041172422

1352Mersenne PrimesSpring School Contest 20053842130

1355Bald Spot RevisitedSpring School Contest 20052359211

1356Something EasierSpring School Contest 20051690294

1430Crime and PunishmentTimus Top Coders: First Challenge1046462

1456Jedi Riddle 2Timus Top Coders: Second Challenge636744

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest666635

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest458917

1593Square Country. Version 2513733

1598DSA Attack374763

1698Square Country 5Petrozavodsk Winter 2009. USU Contest602621

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1359258

1807Cartridges for MaximNEERC 2010 Eastern Subregional2271393

2047MathsUral Championship 2015458444

2070Interesting NumbersUral Regional School Programming Contest 2015930209

2102Michael and CryptographyUral FU Junior Championship 20161297130

2117Polyphemus' triplesUniversity academic school olympiad in informatics 2019209524

2124Algebra on SegmentPetrozavodsk Summer 2018. t.me/umnik_team Contest911114

2138The Good, the Bad and the UglyUral School Programming Contest 20191018100