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ID
Title
Submit
Solved
1001
A + B Problem
19920
9273
1002
A + B Problem (Big integer version)
17663
3980
1003
A * B Problem (Big integer version)
7118
2566
1004
A / B Problem (Big integer version)
3778
1158
1005
Move cards
5284
1552
1006
The Hardest Problem Ever
4067
1577
1007
Rubik's Cube Solver
379
119
1008
Climbing Trees
402
103
1009
Dollars
2605
787
1010
Mutant Flatworld Explorers
1185
331
1011
The Skyline Problem
780
298
1012
Fermat vs_ Pythagoras
359
228
1013
The Cat in the Hat
732
210
1014
Maximum Sum
1696
896
1015
History Grading
382
186
1016
Tree Summing
446
129
1017
Power of Cryptography
1194
561
1018
Simulation Wizardry
172
74
1019
Unidirectional TSP
628
261
1020
Triangle
959
253
1021
Great Equipment
103
47
1022
Uniform Generator
1120
486
1023
Prime Cuts
1790
581
1024
Word Index
625
334
1025
Integer Inquiry
945
664
1026
Eeny Meeny Moo
522
385
1027
Lotto
977
575
1028
Matrix Chain Multiplication
240
153
1029
Humble Numbers
1142
487
1030
Sum It Up
720
294
1031
Transportation
185
80
1032
Roman Numerals
66
36
1033
The Sultan's Successors
254
124
1034
Ananagrams
182
104
1035
Power Crisis
557
281
1036
The Dole Queue
482
199
1037
``Accordian'' Patience
71
43
1038
Trees on the level
306
73
1039
Greedy Gift Givers
479
165
1040
Maya Calendar
499
193
1041
Pipe
106
59
1042
Department
25
6
1043
Joseph
906
451
1044
Cipher
216
66
1045
Sticks
1175
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
971
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
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
154
80
1069
Brackets
405
140
1070
Arbitrage (II)
436
138
1071
The Tower of Babylon
461
204
1072
The Circumference of the Circle
625
391
1073
Knight Moves
675
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
2141
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
798
426
1083
FatMouse的游戏
414
166
1084
滑雪比赛
1429
615
1085
SCU
2291
864
1086
袁源与苹果(三)
172
29
1087
战略游戏
938
286
1088
考古学家的困境
1486
927
1089
FatMouse的奶酪
1992
1128
1090
Dick and Jane
1200
393
1091
指环王
355
170
1092
欧几里得算法
1137
558
1093
伊拉克
286
135
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