list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
16178 Change   23 30.00
15634 Lennys Lucky Lotto Lists   9 185 33.51
7
14
26843 Who is the Best?   2 50.00
34229 "Operation - Modulo"   11 113 45.65
3
17
4227 "Shortest" pair of paths   3 174 38.95
23
17
4302 (K,N)-Knight   294 24.54
9
9
2140 (un)Fair Play   71 38.30
3973 0 0 Pairs   2 738 27.25
1
1
1451 01 Sequence   93 30.06
10676 0110SS   17 1531 42.92
12
6
19971 100pct failure in 72 hours   4 46.67
381 106 miles to Chicago   25 2432 36.71
16
15
9952 111…1 Squared   6 1549 47.69
3
9
5725 123 Sequence   2 112 25.96
1
1
24999 1807   6 405 38.08
16
17
9511 24-Puzzle   16 21.11
27301 2D arrays with XOR property   4 7 50.00
23
39
9721 2s Complement   161 31.30
21409 2x2 Subgrid Sum Problem (generalized)   3 33.33
21407 2x2 Subgrid Sum Problem (medium)   9 18.31
11180 369 Numbers   7 313 15.90
23
24
1448 3D Cover   1 82 27.07
50
34
1296 4 values whose sum is 0   48 4135 26.35
17
13
6690 A - Comparison Expressions   51 33.58
7555 A - Crazy Rows   2 168 47.07
17
21
18467 A Brief Expedition   8 245 57.87
16
13
3377 A Bug’s Life   179 7280 26.57
14
14
9636 A Canvas Building   65 20.83
17
17
1326 A Chase In WonderLand   1 340 13.31
17
1
11904 A Classic Myth - Flatland Superhero   5 46.15
5271 A Coin Game   4 413 30.06
21
30
19551 A Colorful world   2 84 34.20
1
1
35088 A Complex Cone   3 60.00
376 A concrete simulation   11 1553 34.75
11
9
4164 A conjecture of Paul Erdős   4 612 50.64
8
11
22675 A conjecture of Paul Erdős (hard)   2 3 4.84
34
34
34863 A Cumulative Sum Problem   3 10 30.14
34
42
4559 A Day at the Races   105 23.14
4461 A Famous Airport Manager   21 19.03
11578 A Famous City   4 506 33.01
26
26
11575 A Famous Equation   1 60 29.16
17
17
11580 A Famous Game   167 27.02
26
34
11582 A Famous Grid   2 160 18.09
17
17
11573 A Famous ICPC Team   5 1932 38.07
1
9
11576 A Famous King’s Trip   17 9.09
11574 A Famous Stone Collector   2 100 40.53
1
26
18466 A Frightening Evening   82 28.61
1
1
10460 A function over factors   1 86 34.60
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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