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Problem set. Volume 1


IDTitleSourceAuthorsDifficulty

1000A+B Problem9407916

1068Sum3436438

1001Reverse Root2883815

1025Democracy in DangerAutumn School Contest 20002085467

1083Factorials!!!Spring School Contest 20011814068

1005Stone PileUSU Championship 19971639086

1009K-based NumbersUSU Championship 19971501694

1014Product of DigitsUSU Local Contest. 19991436998

1020RopeAutumn School Contest 200014100100

1044Lucky Tickets. Easy!USU Championship 200011616120

1086CryptographySpring School Contest 200111470108

1079MaximumWinter Mathematical Festival Varna 200111404109

1082Gaby IvanushkaSpring School Contest 200110331120

1022Genealogical TreeAutumn School Contest 200010193138

1021Sacrament of the SumAutumn School Contest 20009866142

1017StaircasesUSU Local Contest. 19999102155

1026Questions and AnswersAutumn School Contest 20008989156

1073Square CountryUSU Personal Contest 20018426150

1084Goat in the GardenSpring School Contest 20018421147

1012K-based Numbers. Version 28138173

1048Superlong SumsUSU Local Contest. March 20007161191

1023ButtonsAutumn School Contest 20006844205

1002Phone NumbersCentral European Olympiad in Informatics 19996469218

1033LabyrinthUral Championship 19996105229

1052Rabbit HuntUSU Local Contest. March 20006071226

1011ConductorsUSU Championship 19975959237

1049Brave BalloonistsUSU Local Contest. March 20005727239

1028StarsUral Championship 19995392260

1080Map ColoringWinter Mathematical Festival Varna 20015161241

1010Discrete FunctionUSTU PhysTech Cup 20005120275

1018Binary Apple TreeUSU Local Contest. 19994882288

1081Binary Lexicographic SequenceWinter Mathematical Festival Varna 20014842257

1036Lucky Tickets4717297

1024PermutationsAutumn School Contest 20004620304

1047Simple CalculationsUSU Local Contest. March 20004537302

1087The Time to Take StonesSpring School Contest 20014454277

1053PinocchioNEERC 2000 Central Subregional4261321

1032Find a MultipleUral Championship 19994115296

1008Image EncodingUSTU PhysTech Cup 20004069346

1031Railway TicketsUral Championship 19993785370

1003ParityCentral European Olympiad in Informatics 19993718380

1039Anniversary PartyUSU Championship 20003698375

1007Code WordsUSU Championship 19973697381

1060Flip GameNEERC 20003651355

1029MinistryUral Championship 19993590339

1055CombinationsNEERC 2000 Central Subregional3429398

1090In the Army NowUSU Local Contest. March 20013370348

1078SegmentsWinter Mathematical Festival Varna 20013355371

1015Test the Difference!USU Local Contest. 19993288427

1019Line PaintingUSU Local Contest. 19993190440

1038Spell CheckerUSU Championship 20003032457

1051Simple Game on a GridUSU Local Contest. March 20002745498

1045Funny GameUSU Local Contest. March 20002704506

1094E-screenUSU Local Contest. March 20012692435

1089Verification with a VocabularySpring School Contest 20012686459

1072RoutingUSU Personal Contest 20012594484

1056Computer NetNEERC 2000 Central Subregional2578529

1004Sightseeing TripCentral European Olympiad in Informatics 19992504563

1067Disk TreeNEERC 20002469523

1069Prufer CodeUSU Personal Contest 20012439515

1027D++ AgainAutumn School Contest 20002387587

1066GarlandNEERC 20002350550

1091Tmutarakan ExamsUSU Local Contest. March 20012287512

1059ExpressionNEERC 2000 Central Subregional2150634

1098Questions2123527

1071Nikifor 2USU Personal Contest 20012117593

1095Nikifor 3USU Local Contest. March 20012112554

1064Binary SearchNEERC 20002090618

1054Tower of HanoiNEERC 2000 Central Subregional2089653

1061Buffer ManagerNEERC 20002079621

1085MeetingSpring School Contest 20012062597

1070Local TimeUSU Personal Contest 20011993630

1057Amount of DegreesNEERC 2000 Central Subregional1950699

1076Trash1851674

1034Queens in Peaceful PositionsUral Championship 19991837759

1016Cube on the WalkUSU Local Contest. 19991805776

1088Ilya MurometzSpring School Contest 20011754701

1042Central HeatingUSU Championship 20001733797

1096Get the Right Route Plate!USU Local Contest. March 20011714682

1030TitanicUral Championship 19991661839

1006Square FramesUSU Championship 19971517925

1040Airline CompanyUSU Championship 20001421971

1037Memory ManagementUSU Championship 200011871161

1077Travelling Tours1133398

1035Cross-stitchUral Championship 199910541315

1013K-based Numbers. Version 31006188

1050Preparing an ArticleUSU Local Contest. March 20009971363

1065FrontierNEERC 20009411365

1099Work Scheduling9171148

1043Cover an ArcUSU Championship 20008681583

1097Square Country 2USU Local Contest. March 20018581355

1046Geometrical DreamsUSU Local Contest. March 20007451818

1062TriathlonNEERC 20007101802

1041NikiforUSU Championship 20006482112

1075Thread in a SpaceUSU Personal Contest 20016082041

1074Very Short ProblemUSU Personal Contest 20016022061

1093DartsUSU Local Contest. March 20015981934

1063Domino PuzzleNEERC 20005962140

1092TransversalUSU Local Contest. March 20015202219

1058ChocolateNEERC 2000 Central Subregional4732831