list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
16178 Change   19 29.47
15634 Lennys Lucky Lotto Lists   8 173 32.97
5
14
26843 Who is the Best?   2 50.00
4227 "Shortest" pair of paths   3 165 38.54
23
17
4302 (K,N)-Knight   286 24.54
9
9
2140 (un)Fair Play   70 39.21
3973 0 0 Pairs   2 718 27.07
1
1
1451 01 Sequence   93 30.06
10676 0110SS   12 1384 43.83
12
6
19971 100pct failure in 72 hours   4 46.67
381 106 miles to Chicago   15 2261 36.39
15
11
9952 111…1 Squared   6 1454 47.33
3
9
5725 123 Sequence   1 109 26.28
1
1
24999 1807   7 337 36.99
17
17
9511 24-Puzzle   16 23.46
27301 2D arrays with XOR property   4 7 50.00
23
39
9721 2s Complement   160 31.45
21409 2x2 Subgrid Sum Problem (generalized)   3 37.50
21407 2x2 Subgrid Sum Problem (medium)   8 18.18
11180 369 Numbers   4 240 15.95
23
26
1448 3D Cover   1 81 27.30
50
34
1296 4 values whose sum is 0   31 3553 26.45
18
13
6690 A - Comparison Expressions   51 33.58
7555 A - Crazy Rows   2 163 46.63
17
21
18467 A Brief Expedition   7 228 57.36
16
12
3377 A Bug’s Life   122 5807 25.75
14
13
9636 A Canvas Building   64 20.63
17
17
1326 A Chase In WonderLand   1 326 13.26
17
1
11904 A Classic Myth - Flatland Superhero   5 54.55
5271 A Coin Game   3 386 29.31
17
28
19551 A Colorful world   2 76 36.18
1
1
376 A concrete simulation   11 1529 34.64
11
9
4164 A conjecture of Paul Erdős   2 525 50.03
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   21 19.59
11578 A Famous City   4 467 32.79
26
26
11575 A Famous Equation   1 56 29.29
17
17
11580 A Famous Game   163 26.62
26
34
11582 A Famous Grid   1 154 18.39
17
17
11573 A Famous ICPC Team   5 1892 37.81
1
8
11576 A Famous King’s Trip   17 9.18
11574 A Famous Stone Collector   2 88 40.30
1
26
18466 A Frightening Evening   54 28.69
10460 A function over factors   1 83 35.91
1
17
1471 A Game of Pearls   38 28.77
1447 A Game of Toy Bricks   36 35.09
1419 A Game with Numbers   57 7935 61.86
2
10
4060 A game with probability   111 20.32
6950 A HUGE TOWER   95 46.56

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