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Problem set. Number Theory Problems


IDTitleSourceAuthorsDifficulty

1049Brave BalloonistsUSU Local Contest. March 20005547240

1086CryptographySpring School Contest 200110946110

1091Tmutarakan ExamsUSU Local Contest. March 20012275500

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001470293

1118Nontrivial NumbersAutumn School Contest 20014294103

1132Square Root722605

1133Fibonacci SequenceNEERC 2001 Central Subregional2414183

1141RSA Attack1199367

1204IdempotentsUSU Local Contest. March 20021952227

1261TipsAutumn School Contest 20031335339

1268Little ChuUSU Championship 2003595755

1286Starship TravelUSU Personal Contest 2004666679

1343Fairy TaleUSU Championship 20041049439

1352Mersenne PrimesSpring School Contest 20053576130

1355Bald Spot RevisitedSpring School Contest 20052113219

1356Something EasierSpring School Contest 20051315351

1430Crime and PunishmentTimus Top Coders: First Challenge964465

1456Jedi Riddle 2Timus Top Coders: Second Challenge572765

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest609631

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest385988

1593Square Country. Version 2449744

1598DSA Attack294388

1698Square Country 5Petrozavodsk Winter 2009. USU Contest553600

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1187258

1807Cartridges for MaximNEERC 2010 Eastern Subregional2041330

2047MathsUral Championship 2015369407

2070Interesting NumbersUral Regional School Programming Contest 2015701200

2102Michael and CryptographyUral FU Junior Championship 2016899125

2117Polyphemus' triplesUniversity academic school olympiad in informatics 2019111451

2124Algebra on SegmentPetrozavodsk Summer 2018. t.me/umnik_team Contest251493

2138The Good, the Bad and the UglyUral School Programming Contest 2019292139