list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
1004 Polygon Encoder   64 11.12
17
1
1021 Aibohphobia   310 10728 36.22
12
17
1022 Angels and Devils   6 675 31.13
26
25
1024 Complete Chess Boards   2 536 54.96
17
20
1025 Fashion Shows   30 27879 46.43
3
3
1026 Favorite Dice   42 5492 63.85
4
21
1027 Fool the Police   25 1655 27.09
18
23
1028 Hubulullu   61 8257 58.72
2
15
1029 Matrix Summation   53 3559 20.15
15
18
1030 Triple Fat Ladies   106 19217 51.73
4
12
1031 Up Subsequence   2 734 32.60
15
10
1043 Can you answer these queries I   569 14329 19.05
25
24
1108 Card Trick   68 2246 50.39
21
24
1110 Sudoku   4 541 40.15
34
1
1112 Number Steps   84 34156 43.04
4
4
1161 Tic-Tac-Toe ( I )   20 3383 22.85
12
11
1162 Tic-Tac-Toe ( II )   8 2411 30.37
17
10
1163 Java vs C ++   17 5524 22.88
14
5
1166 Dead Fraction   324 23.42
12
17
1167 Move To Invert   13 2461 31.80
8
16
1182 Sorted bit squence   296 42.31
17
1
1183 Accomodate the palace   4 555 52.75
17
34
1267 Origin of Life   41 25.10
34
1
1268 CN Tower (Easy)   3 1123 30.75
8
6
1269 CN Tower (Hard)   27 11.58
34
34
1270 Paint By Numbers   28 23.24
1285 Continuous Fractions Again   5 376 41.86
15
10
1296 4 values whose sum is 0   64 5121 24.92
18
14
1325 Partial Sums   2 225 24.79
9
1
1326 A Chase In WonderLand   2 412 13.56
6
1
1329 Matrix   6 414 17.21
28
26
1335 Maze   67 17.90
17
17
1391 Summing to a Square Prime   16 1429 53.97
12
17
1418 The Cats and the Mouse   55 3001 33.76
10
12
1419 A Game with Numbers   118 12077 61.48
3
10
1421 Goods   148 30.65
1
34
1433 The Sum   2 311 17.71
39
30
1434 Equation   5 421 33.46
21
26
1435 Vertex Cover   129 4159 34.36
15
18
1436 Is it a tree   339 21154 35.31
10
10
1437 Longest path in a tree   407 20181 39.56
14
15
1440 Use of Function Arctan   4 543 29.24
5
26
1441 The Clever Typist   1 34 8.28
17
34
1442 Strange Food Chain   19 960 19.81
22
25
1444 DEL Command II   41 9.82
17
34
1447 A Game of Toy Bricks   42 27.12
1
1
1448 3D Cover   3 100 27.12
28
17
1451 01 Sequence   1 99 28.63
9
26
1452 Birthday Cake   112 26.86
17
34
1453 Optimal Connected Subset   159 47.19
17
28

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