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Problems

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  ID Title Submit Solved
  1001 A + B Problem 19534 9199
  1002 A + B Problem (Big integer version) 17162 3957
  1003 A * B Problem (Big integer version) 7054 2554
  1004 A / B Problem (Big integer version) 3762 1152
  1005 Move cards 5233 1540
  1006 The Hardest Problem Ever 4037 1569
  1007 Rubik's Cube Solver 375 117
  1008 Climbing Trees 397 102
  1009 Dollars 2589 783
  1010 Mutant Flatworld Explorers 1169 328
  1011 The Skyline Problem 776 296
  1012 Fermat vs_ Pythagoras 350 226
  1013 The Cat in the Hat 728 209
  1014 Maximum Sum 1685 894
  1015 History Grading 380 185
  1016 Tree Summing 446 129
  1017 Power of Cryptography 1191 560
  1018 Simulation Wizardry 172 74
  1019 Unidirectional TSP 623 261
  1020 Triangle 956 252
  1021 Great Equipment 103 47
  1022 Uniform Generator 1120 486
  1023 Prime Cuts 1788 580
  1024 Word Index 624 333
  1025 Integer Inquiry 944 663
  1026 Eeny Meeny Moo 519 383
  1027 Lotto 974 574
  1028 Matrix Chain Multiplication 236 151
  1029 Humble Numbers 1133 486
  1030 Sum It Up 718 293
  1031 Transportation 185 80
  1032 Roman Numerals 66 36
  1033 The Sultan's Successors 249 122
  1034 Ananagrams 182 104
  1035 Power Crisis 557 281
  1036 The Dole Queue 472 199
  1037 ``Accordian'' Patience 71 43
  1038 Trees on the level 303 72
  1039 Greedy Gift Givers 479 165
  1040 Maya Calendar 499 193
  1041 Pipe 106 59
  1042 Department 25 6
  1043 Joseph 904 450
  1044 Cipher 216 66
  1045 Sticks 1169 348
  1046 Tin Cutter 74 23
  1047 FORCAL 68 13
  1048 L-system 13 8
  1049 Packets 806 282
  1050 Crosswords (II) 39 21
  1051 palindromes 964 293
  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 1071 500
  1060 Up and Down Sequences 63 41
  1061 Machined Surfaces 149 79
  1062 LED Test 41 20
  1063 Molecules 23 15
  1064 Matching Meetings 6 2
  1065 Supercomputer Selection, The Sequel 2 2
  1066 Polygonal Puzzle 12 7
  1067 Word-Search Wonder 263 130
  1068 MPI Maelstrom 143 80
  1069 Brackets 334 139
  1070 Arbitrage (II) 436 138
  1071 The Tower of Babylon 437 202
  1072 The Circumference of the Circle 624 390
  1073 Knight Moves 672 358
  1074 BlueEyes and Apples (I) 2165 802
  1075 BlueEyes and Apples (II) 1194 512
  1076 BlueEyes' Problem 1485 459
  1077 BlueEyes' Google 866 350
  1078 BlueEyes' Schedule 2122 829
  1079 BlueEyes' Running 974 350
  1080 生化危机3 2317 759
  1081 SARS 833 326
  1082 不甘心的皇后 782 421
  1083 FatMouse的游戏 414 166
  1084 滑雪比赛 1393 615
  1085 SCU 2278 859
  1086 袁源与苹果（三） 172 29
  1087 战略游戏 926 286
  1088 考古学家的困境 1483 926
  1089 FatMouse的奶酪 1989 1125
  1090 Dick and Jane 1199 393
  1091 指环王 355 170
  1092 欧几里得算法 1132 555
  1093 伊拉克 285 134
  1094 临界波 640 187
  1095 运送物资 424 114
  1096 Euro Efficiency 148 64
  1097 Markov Trains 7 3
  1098 Floors 42 18
  1099 Huffman Tree 18 9