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Problem set. Volume 1


1001Reverse Root2952815

1000A+B Problem9615716


1025Democracy in DangerAutumn School Contest 20002116168

1083Factorials!!!Spring School Contest 20011847668

1005Stone PileUSU Championship 19971693785

1009K-based NumbersUSU Championship 19971536893

1014Product of DigitsUSU Local Contest. 19991478797

1020RopeAutumn School Contest 200014301100

1086CryptographySpring School Contest 200111684108

1079MaximumWinter Mathematical Festival Varna 200111560110

1044Lucky Tickets. Easy!USU Championship 200011761120

1082Gaby IvanushkaSpring School Contest 200110410121

1022Genealogical TreeAutumn School Contest 200010413137

1021Sacrament of the SumAutumn School Contest 20009970143

1073Square CountryUSU Personal Contest 20018720147

1084Goat in the GardenSpring School Contest 20018543147

1017StaircasesUSU Local Contest. 19999327153

1026Questions and AnswersAutumn School Contest 20009068158

1012K-based Numbers. Version 28212174

1013K-based Numbers. Version 31062188

1048Superlong SumsUSU Local Contest. March 20007220193

1023ButtonsAutumn School Contest 20006893207

1002Phone NumbersCentral European Olympiad in Informatics 19996528220

1052Rabbit HuntUSU Local Contest. March 20006116228

1080Map ColoringWinter Mathematical Festival Varna 20015534229

1033LabyrinthUral Championship 19996167231

1011ConductorsUSU Championship 19975993239

1049Brave BalloonistsUSU Local Contest. March 20005796241

1081Binary Lexicographic SequenceWinter Mathematical Festival Varna 20014892259

1028StarsUral Championship 19995457261

1087The Time to Take StonesSpring School Contest 20014583274

1010Discrete FunctionUSTU PhysTech Cup 20005155278

1018Binary Apple TreeUSU Local Contest. 19995110280

1047Simple CalculationsUSU Local Contest. March 20004734294

1036Lucky Tickets4789297

1032Find a MultipleUral Championship 19994153298

1024PermutationsAutumn School Contest 20004651307

1053PinocchioNEERC 2000 Central Subregional4285324

1029MinistryUral Championship 19993622342

1008Image EncodingUSTU PhysTech Cup 20004095350

1090In the Army NowUSU Local Contest. March 20013409350

1078SegmentsWinter Mathematical Festival Varna 20013554356

1060Flip GameNEERC 20003685357

1031Railway TicketsUral Championship 19993833371

1039Anniversary PartyUSU Championship 20003746376

1003ParityCentral European Olympiad in Informatics 19993763381

1007Code WordsUSU Championship 19973719385

1077Travelling Tours1150399

1055CombinationsNEERC 2000 Central Subregional3449403

1015Test the Difference!USU Local Contest. 19993302432

1094E-screenUSU Local Contest. March 20012711439

1019Line PaintingUSU Local Contest. 19993211445

1038Spell CheckerUSU Championship 20003046462

1089Verification with a VocabularySpring School Contest 20012696465

1067Disk TreeNEERC 20002708485

1072RoutingUSU Personal Contest 20012618488

1051Simple Game on a GridUSU Local Contest. March 20002754505

1045Funny GameUSU Local Contest. March 20002734509

1069Prufer CodeUSU Personal Contest 20012481515

1091Tmutarakan ExamsUSU Local Contest. March 20012310515


1056Centers of the NetNEERC 2000 Central Subregional2605533

1066GarlandNEERC 20002381551

1095Nikifor 3USU Local Contest. March 20012130558

1004Sightseeing TripCentral European Olympiad in Informatics 19992526567

1027D++ AgainAutumn School Contest 20002399594

1071Nikifor 2USU Personal Contest 20012131599

1085MeetingSpring School Contest 20012076603

1064Binary SearchNEERC 20002104624

1061Buffer ManagerNEERC 20002072634

1070Local TimeUSU Personal Contest 20012005636

1059ExpressionNEERC 2000 Central Subregional2163641

1054Tower of HanoiNEERC 2000 Central Subregional2108658


1096Get the Right Route Plate!USU Local Contest. March 20011738684

1057Amount of DegreesNEERC 2000 Central Subregional1968704

1088Ilya MurometzSpring School Contest 20011764709

1034Queens in Peaceful PositionsUral Championship 19991845769

1016Cube on the WalkUSU Local Contest. 19991814785

1042Central HeatingUSU Championship 20001743806

1030TitanicUral Championship 19991671848

1006Square FramesUSU Championship 19971527934

1040Airline CompanyUSU Championship 20001434978

1099Work Scheduling9401138

1037Memory ManagementUSU Championship 200012111157

1035Cross-stitchUral Championship 199910621327

1097Square Country 2USU Local Contest. March 20018831338

1050Preparing an ArticleUSU Local Contest. March 200010061374

1065FrontierNEERC 20009501374

1043Cover an ArcUSU Championship 20008791589

1062TriathlonNEERC 20007231799

1046Geometrical DreamsUSU Local Contest. March 20007531829

1093DartsUSU Local Contest. March 20016101928

1075Thread in a SpaceUSU Personal Contest 20016202035

1074Very Short ProblemUSU Personal Contest 20016082075

1063Domino PuzzleNEERC 20006052143

1092TransversalUSU Local Contest. March 20015282221

1041NikiforUSU Championship 20006112275

1058ChocolateNEERC 2000 Central Subregional4842813