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Problems

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  ID Title Submit Solved
  1001 A + B Problem 20194 9360
  1002 A + B Problem (Big integer version) 18341 4034
  1003 A * B Problem (Big integer version) 7215 2578
  1004 A / B Problem (Big integer version) 3787 1163
  1005 Move cards 5307 1557
  1006 The Hardest Problem Ever 4108 1585
  1007 Rubik's Cube Solver 393 119
  1008 Climbing Trees 402 103
  1009 Dollars 2622 789
  1010 Mutant Flatworld Explorers 1185 331
  1011 The Skyline Problem 786 300
  1012 Fermat vs_ Pythagoras 361 229
  1013 The Cat in the Hat 732 210
  1014 Maximum Sum 1697 897
  1015 History Grading 384 187
  1016 Tree Summing 447 129
  1017 Power of Cryptography 1197 562
  1018 Simulation Wizardry 172 74
  1019 Unidirectional TSP 630 262
  1020 Triangle 960 254
  1021 Great Equipment 103 47
  1022 Uniform Generator 1120 486
  1023 Prime Cuts 1803 582
  1024 Word Index 629 335
  1025 Integer Inquiry 946 664
  1026 Eeny Meeny Moo 545 391
  1027 Lotto 977 575
  1028 Matrix Chain Multiplication 241 154
  1029 Humble Numbers 1150 488
  1030 Sum It Up 720 294
  1031 Transportation 186 81
  1032 Roman Numerals 66 36
  1033 The Sultan's Successors 292 129
  1034 Ananagrams 191 105
  1035 Power Crisis 558 282
  1036 The Dole Queue 490 199
  1037 ``Accordian'' Patience 71 43
  1038 Trees on the level 311 73
  1039 Greedy Gift Givers 483 166
  1040 Maya Calendar 499 193
  1041 Pipe 108 60
  1042 Department 25 6
  1043 Joseph 907 452
  1044 Cipher 216 66
  1045 Sticks 1178 348
  1046 Tin Cutter 74 23
  1047 FORCAL 68 13
  1048 L-system 13 8
  1049 Packets 819 283
  1050 Crosswords (II) 39 21
  1051 palindromes 985 295
  1052 MASH 161 109
  1053 Postscript 29 13
  1054 Radar Scopes 35 9
  1055 Message Routing 16 8
  1056 Gears on a Board 17 3
  1057 Excuses, Excuses! 303 140
  1058 Centipede Collisions 91 18
  1059 Pi 1075 500
  1060 Up and Down Sequences 70 42
  1061 Machined Surfaces 150 79
  1062 LED Test 41 20
  1063 Molecules 23 15
  1064 Matching Meetings 9 3
  1065 Supercomputer Selection, The Sequel 2 2
  1066 Polygonal Puzzle 17 8
  1067 Word-Search Wonder 263 130
  1068 MPI Maelstrom 156 80
  1069 Brackets 410 141
  1070 Arbitrage (II) 436 138
  1071 The Tower of Babylon 462 204
  1072 The Circumference of the Circle 628 393
  1073 Knight Moves 678 358
  1074 BlueEyes and Apples (I) 2169 804
  1075 BlueEyes and Apples (II) 1194 512
  1076 BlueEyes' Problem 1493 460
  1077 BlueEyes' Google 866 350
  1078 BlueEyes' Schedule 2149 830
  1079 BlueEyes' Running 974 350
  1080 生化危机3 2317 759
  1081 SARS 833 326
  1082 不甘心的皇后 840 426
  1083 FatMouse的游戏 419 167
  1084 滑雪比赛 1624 687
  1085 SCU 2291 864
  1086 袁源与苹果（三） 172 29
  1087 战略游戏 942 286
  1088 考古学家的困境 1518 940
  1089 FatMouse的奶酪 1995 1131
  1090 Dick and Jane 1205 393
  1091 指环王 362 171
  1092 欧几里得算法 1141 559
  1093 伊拉克 287 136
  1094 临界波 642 188
  1095 运送物资 424 114
  1096 Euro Efficiency 149 65
  1097 Markov Trains 7 3
  1098 Floors 42 18