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Problem set. Volume 1


IDTitleSourceAuthorsDifficulty

1000A+B Problem8769616

1001Reverse Root2636516

1068Sum3174439

1025Democracy in DangerAutumn School Contest 20001964268

1083Factorials!!!Spring School Contest 20011682670

1005Stone PileUSU Championship 19971527589

1009K-based NumbersUSU Championship 19971419695

1014Product of DigitsUSU Local Contest. 199913324101

1020RopeAutumn School Contest 200013059103

1079MaximumWinter Mathematical Festival Varna 200110780111

1086CryptographySpring School Contest 200110695111

1082Gaby IvanushkaSpring School Contest 200110016118

1044Lucky Tickets. Easy!USU Championship 200011148119

1022Genealogical TreeAutumn School Contest 20009818137

1021Sacrament of the SumAutumn School Contest 20009503141

1084Goat in the GardenSpring School Contest 20018086146

1026Questions and AnswersAutumn School Contest 20009157147

1073Square CountryUSU Personal Contest 20017884153

1017StaircasesUSU Local Contest. 19998637156

1012K-based Numbers. Version 27802173

1048Superlong SumsUSU Local Contest. March 20006957188

1023ButtonsAutumn School Contest 20006584204

1013K-based Numbers. Version 3775207

1002Phone NumbersCentral European Olympiad in Informatics 19996248216

1052Rabbit HuntUSU Local Contest. March 20005831225

1033LabyrinthUral Championship 19995864228

1011ConductorsUSU Championship 19975784233

1049Brave BalloonistsUSU Local Contest. March 20005487239

1080Map ColoringWinter Mathematical Festival Varna 20014806248

1081Binary Lexicographic SequenceWinter Mathematical Festival Varna 20014648257

1028StarsUral Championship 19995036266

1010Discrete FunctionUSTU PhysTech Cup 20004991270

1087The Time to Take StonesSpring School Contest 20014267277

1018Binary Apple TreeUSU Local Contest. 19994641290

1047Simple CalculationsUSU Local Contest. March 20004432296

1032Find a MultipleUral Championship 19993914298

1036Lucky Tickets4494298

1024PermutationsAutumn School Contest 20004467301

1053PinocchioNEERC 2000 Central Subregional4163314

1029MinistryUral Championship 19993470336

1008Image EncodingUSTU PhysTech Cup 20003959341

1060Flip GameNEERC 20003487355

1090In the Army NowUSU Local Contest. March 20013148357

1031Railway TicketsUral Championship 19993669365

1078SegmentsWinter Mathematical Festival Varna 20013188374

1039Anniversary PartyUSU Championship 20003505378

1007Code WordsUSU Championship 19973548380

1003ParityCentral European Olympiad in Informatics 19993507385

1055CombinationsNEERC 2000 Central Subregional3312395

1077Travelling Tours1052411

1015Test the Difference!USU Local Contest. 19993177423

1094E-screenUSU Local Contest. March 20012623428

1019Line PaintingUSU Local Contest. 19993036443

1038Spell CheckerUSU Championship 20002956448

1089Verification with a VocabularySpring School Contest 20012617451

1072RoutingUSU Personal Contest 20012508480

1051Simple Game on a GridUSU Local Contest. March 20002689487

1091Tmutarakan ExamsUSU Local Contest. March 20012247499

1045Funny GameUSU Local Contest. March 20002547514

1098Questions2065519

1069Prufer CodeUSU Personal Contest 20012299523

1056Computer NetNEERC 2000 Central Subregional2456532

1066GarlandNEERC 20002289540

1067Disk TreeNEERC 20002255548

1095Nikifor 3USU Local Contest. March 20012044548

1004Sightseeing TripCentral European Olympiad in Informatics 19992394563

1027D++ AgainAutumn School Contest 20002315579

1085MeetingSpring School Contest 20012002589

1071Nikifor 2USU Personal Contest 20012005599

1064Binary SearchNEERC 20002039606

1061Buffer ManagerNEERC 20002030609

1070Local TimeUSU Personal Contest 20011935621

1059ExpressionNEERC 2000 Central Subregional2091624

1054Hanoi TowerNEERC 2000 Central Subregional1992655

1076Trash1794666

1096Get the Right Route Plate!USU Local Contest. March 20011635684

1088Ilya MurometzSpring School Contest 20011670705

1057Amount of DegreesNEERC 2000 Central Subregional1845707

1037Memory ManagementUSU Championship 20001745758

1034Queens in Peaceful PositionsUral Championship 19991754761

1016Cube on the WalkUSU Local Contest. 19991726776

1042Central HeatingUSU Championship 20001644804

1030TitanicUral Championship 19991591838

1006Square FramesUSU Championship 19971471913

1040Airline CompanyUSU Championship 20001344982

1099Work Scheduling8531181

1035Cross-stitchUral Championship 199910171304

1050Preparing an ArticleUSU Local Contest. March 20009521366

1065FrontierNEERC 20008891382

1097Square Country 2USU Local Contest. March 20017991392

1043Cover an ArcUSU Championship 20008291585

1062TriathlonNEERC 20006811797

1046Geometrical DreamsUSU Local Contest. March 20007021845

1093DartsUSU Local Contest. March 20015731931

1074Very Short ProblemUSU Personal Contest 20015762061

1041NikiforUSU Championship 20006262091

1063Domino PuzzleNEERC 20005732129

1075Thread in a SpaceUSU Personal Contest 20015452176

1092TransversalUSU Local Contest. March 20014842279

1058ChocolateNEERC 2000 Central Subregional4402908