list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
913 Query on a tree II   65 2768 24.49
24
22
944 Free Tour   16 3.54
962 Intergalactic Map   3 496 24.95
22
29
964 Entrapment   5 319 24.15
17
26
967 Parking Bay   1 444 47.10
17
34
972 Birthday   115 19.41
987 Mobile   67 15.24
996 Continuous Fractions   1 258 36.83
17
17
999 Generalized Matrioshkas   399 32.34
1000 Equidivisions   -1 582 23.38
13
13
1001 Babylonian Roulette   2 577 49.37
17
17
1002 Uncle Jack   9 2737 39.80
9
8
1003 Little Quilt   154 43.93
17
17
1004 Polygon Encoder   52 8.40
1021 Aibohphobia   187 7454 35.34
11
16
1022 Angels and Devils   5 572 30.94
27
27
1024 Complete Chess Boards   1 505 54.88
21
21
1025 Fashion Shows   24 18718 47.43
3
4
1026 Favorite Dice   29 3639 74.15
4
21
1027 Fool the Police   16 1454 26.67
17
23
1028 Hubulullu   44 6811 59.17
2
15
1029 Matrix Summation   28 2514 20.33
12
15
1030 Triple Fat Ladies   74 13646 51.19
4
13
1031 Up Subsequence   2 698 32.49
17
12
1043 Can you answer these queries I   346 7666 19.43
24
24
1108 Card Trick   32 1578 49.14
20
21
1110 Sudoku   2 150 38.95
1112 Number Steps   52 23059 44.53
3
4
1161 Tic-Tac-Toe ( I )   9 2006 23.93
9
9
1162 Tic-Tac-Toe ( II )   4 1456 31.14
14
8
1163 Java vs C ++   16 5031 22.61
13
4
1166 Dead Fraction   1 297 22.93
17
34
1167 Move To Invert   10 2331 32.59
9
17
1182 Sorted bit squence   279 47.02
1183 Accomodate the palace   3 431 49.77
17
34
1267 Origin of Life   33 20.87
1268 CN Tower (Easy)   3 1072 30.35
8
6
1269 CN Tower (Hard)   22 12.87
1270 Paint By Numbers   18 21.21
1285 Continuous Fractions Again   3 332 41.13
17
17
1296 4 values whose sum is 0   44 4034 26.34
17
13
1325 Partial Sums   1 218 24.66
1326 A Chase In WonderLand   1 337 13.29
17
1
1329 Matrix   3 380 17.73
26
21
1335 Maze   39 22.50
1391 Summing to a Square Prime   16 1326 54.55
13
17
1418 The Cats and the Mouse   39 2386 34.04
12
12
1419 A Game with Numbers   66 8478 61.96
2
10
1420 Geometry and a Square   1 261 34.23
17
34
1421 Goods   137 30.77

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