list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
16178 Change   24 24.46
15634 Lennys Lucky Lotto Lists   9 196 33.83
7
14
26843 Who is the Best?   2 40.00
34229 "Operation - Modulo"   13 173 32.27
3
17
4227 "Shortest" pair of paths   3 177 39.04
23
17
4302 (K,N)-Knight   1 297 24.55
23
23
2140 (un)Fair Play   71 38.30
3973 0 0 Pairs   3 752 27.22
13
13
1451 01 Sequence   95 29.57
10676 0110SS   22 1600 42.54
12
8
19971 100pct failure in 72 hours   4 46.67
381 106 miles to Chicago   32 2670 37.32
15
15
9952 111…1 Squared   8 1608 47.54
5
10
5725 123 Sequence   2 112 25.96
1
1
24999 1807   7 437 38.59
16
17
9511 24-Puzzle   16 20.21
27301 2D arrays with XOR property   4 8 52.00
23
39
9721 2s Complement   162 31.39
21409 2x2 Subgrid Sum Problem (generalized)   3 33.33
21407 2x2 Subgrid Sum Problem (medium)   9 18.31
11180 369 Numbers   9 395 15.33
27
28
1448 3D Cover   1 87 26.30
50
34
1296 4 values whose sum is 0   54 4349 26.46
18
13
6690 A - Comparison Expressions   52 33.45
7555 A - Crazy Rows   2 171 45.44
17
21
18467 A Brief Expedition   8 250 56.05
16
13
3377 A Bug’s Life   226 8192 27.26
13
13
9636 A Canvas Building   65 20.75
17
17
1326 A Chase In WonderLand   1 356 13.25
17
1
11904 A Classic Myth - Flatland Superhero   5 46.15
5271 A Coin Game   4 430 32.02
21
30
19551 A Colorful world   2 84 34.20
1
1
35088 A Complex Cone   7 66.67
376 A concrete simulation   13 1571 34.55
11
12
4164 A conjecture of Paul Erdős   7 720 48.69
9
10
22675 A conjecture of Paul Erdős (hard)   2 3 4.84
34
34
34863 A Cumulative Sum Problem   4 14 30.77
34
42
4559 A Day at the Races   105 23.14
4461 A Famous Airport Manager   21 18.82
11578 A Famous City   7 546 32.69
17
27
11575 A Famous Equation   1 62 29.22
17
17
11580 A Famous Game   167 27.06
26
34
11582 A Famous Grid   2 173 17.82
17
17
11573 A Famous ICPC Team   7 1951 37.98
1
8
11576 A Famous King’s Trip   17 9.00
11574 A Famous Stone Collector   3 105 40.66
9
23
18466 A Frightening Evening   92 28.53
1
1
10460 A function over factors   1 86 34.43
1
17
1471 A Game of Pearls   1 39 30.53
17
17
1447 A Game of Toy Bricks   36 35.09

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