list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
16178 Change   22 31.68
15634 Lennys Lucky Lotto Lists   8 174 32.97
5
14
26843 Who is the Best?   2 50.00
34229 "Operation - Modulo"   7 67 49.68
4
15
4227 "Shortest" pair of paths   3 165 38.16
23
17
4302 (K,N)-Knight   291 24.62
9
9
2140 (un)Fair Play   70 39.21
3973 0 0 Pairs   2 725 27.30
1
1
1451 01 Sequence   93 30.06
10676 0110SS   12 1419 43.44
13
7
19971 100pct failure in 72 hours   4 46.67
381 106 miles to Chicago   20 2312 36.58
15
12
9952 111…1 Squared   6 1470 47.32
3
9
5725 123 Sequence   1 109 26.41
1
1
24999 1807   6 362 37.43
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 33.33
21407 2x2 Subgrid Sum Problem (medium)   9 19.12
11180 369 Numbers   5 248 15.81
21
24
1448 3D Cover   1 82 27.41
50
34
1296 4 values whose sum is 0   36 3741 26.13
17
13
6690 A - Comparison Expressions   51 33.58
7555 A - Crazy Rows   2 165 45.36
17
21
18467 A Brief Expedition   7 237 57.77
16
12
3377 A Bug’s Life   133 6193 25.97
14
13
9636 A Canvas Building   64 20.63
17
17
1326 A Chase In WonderLand   1 332 13.26
17
1
11904 A Classic Myth - Flatland Superhero   5 54.55
5271 A Coin Game   3 388 29.36
17
28
19551 A Colorful world   2 76 36.18
1
1
376 A concrete simulation   11 1540 34.67
11
9
4164 A conjecture of Paul Erdős   3 543 50.29
9
13
22675 A conjecture of Paul Erdős (hard)   2 3 5.00
34
34
4559 A Day at the Races   105 23.14
4461 A Famous Airport Manager   21 19.59
11578 A Famous City   4 474 33.02
26
26
11575 A Famous Equation   1 57 29.47
17
17
11580 A Famous Game   163 26.62
26
34
11582 A Famous Grid   1 154 17.91
17
17
11573 A Famous ICPC Team   5 1905 37.91
1
9
11576 A Famous King’s Trip   17 9.18
11574 A Famous Stone Collector   2 94 40.75
1
26
18466 A Frightening Evening   60 27.47
1
1
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 8133 61.90
2
10
4060 A game with probability   115 21.07

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