list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
16178 Change   17 29.89
15634 Lennys Lucky Lotto Lists   8 166 33.19
5
14
26843 Who is the Best?   2 50.00
4227 "Shortest" pair of paths   2 159 38.88
21
17
4302 (K,N)-Knight   -1 281 24.36
1
1
2140 (un)Fair Play   69 38.94
3973 0 0 Pairs   2 707 27.04
1
1
1451 01 Sequence   92 30.75
10676 0110SS   11 1333 44.21
12
6
19971 100pct failure in 72 hours   4 46.67
381 106 miles to Chicago   15 2184 36.33
15
11
9952 111…1 Squared   6 1419 47.14
3
9
5725 123 Sequence   1 109 26.28
1
1
24999 1807   7 313 36.34
17
17
9511 24-Puzzle   16 23.46
27301 2D arrays with XOR property   4 7 52.17
23
39
9721 2s Complement   160 31.53
21409 2x2 Subgrid Sum Problem (generalized)   3 37.50
21407 2x2 Subgrid Sum Problem (medium)   7 15.38
11180 369 Numbers   4 221 16.36
23
26
1448 3D Cover   1 79 26.93
50
34
1296 4 values whose sum is 0   28 3353 26.29
17
13
6690 A - Comparison Expressions   50 33.09
7555 A - Crazy Rows   2 161 46.95
17
21
18467 A Brief Expedition   6 217 58.43
14
12
3377 A Bug’s Life   110 5323 25.48
14
13
9636 A Canvas Building   61 20.36
17
17
1326 A Chase In WonderLand   1 316 13.25
17
1
11904 A Classic Myth - Flatland Superhero   5 54.55
5271 A Coin Game   3 383 29.21
17
28
19551 A Colorful world   2 76 36.55
1
1
376 A concrete simulation   11 1518 34.57
11
9
4164 A conjecture of Paul Erdős   2 510 49.69
1
9
22675 A conjecture of Paul Erdős (hard)   2 3 6.52
34
34
4559 A Day at the Races   105 23.14
4461 A Famous Airport Manager   20 19.41
11578 A Famous City   4 453 32.76
26
26
11575 A Famous Equation   1 53 28.97
17
17
11580 A Famous Game   158 26.51
26
34
11582 A Famous Grid   1 154 18.39
17
17
11573 A Famous ICPC Team   4 1870 37.87
1
8
11576 A Famous King’s Trip   17 9.18
11574 A Famous Stone Collector   2 84 40.03
1
26
18466 A Frightening Evening   51 28.38
10460 A function over factors   1 81 35.80
1
17
1471 A Game of Pearls   38 28.77
1447 A Game of Toy Bricks   36 35.09
1419 A Game with Numbers   49 7662 61.73
2
9
4060 A game with probability   106 19.03
6950 A HUGE TOWER   93 46.20

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