list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
16178 Change   23 30.56
15634 Lennys Lucky Lotto Lists   8 180 33.25
6
14
26843 Who is the Best?   2 50.00
34229 "Operation - Modulo"   8 93 45.78
4
17
4227 "Shortest" pair of paths   3 172 38.90
23
17
4302 (K,N)-Knight   292 24.57
9
9
2140 (un)Fair Play   71 38.30
3973 0 0 Pairs   2 735 27.48
1
1
1451 01 Sequence   93 30.06
10676 0110SS   15 1511 43.27
12
6
19971 100pct failure in 72 hours   4 46.67
381 106 miles to Chicago   22 2400 36.64
15
14
9952 111…1 Squared   6 1514 47.48
3
9
5725 123 Sequence   2 111 26.16
1
1
24999 1807   6 396 38.18
16
17
9511 24-Puzzle   16 21.35
27301 2D arrays with XOR property   4 7 50.00
23
39
9721 2s Complement   161 31.46
21409 2x2 Subgrid Sum Problem (generalized)   3 33.33
21407 2x2 Subgrid Sum Problem (medium)   9 18.31
11180 369 Numbers   7 285 15.67
23
24
1448 3D Cover   1 82 27.07
50
34
1296 4 values whose sum is 0   44 4034 26.34
17
13
6690 A - Comparison Expressions   51 33.58
7555 A - Crazy Rows   2 168 45.98
17
21
18467 A Brief Expedition   8 242 57.73
16
13
3377 A Bug’s Life   159 6908 26.36
14
13
9636 A Canvas Building   65 20.83
17
17
1326 A Chase In WonderLand   1 337 13.29
17
1
11904 A Classic Myth - Flatland Superhero   5 46.15
5271 A Coin Game   4 407 29.89
21
30
19551 A Colorful world   2 76 36.18
1
1
35088 A Complex Cone   0 0.00
376 A concrete simulation   11 1549 34.73
11
9
4164 A conjecture of Paul Erdős   3 584 50.35
9
13
22675 A conjecture of Paul Erdős (hard)   2 3 5.00
34
34
34863 A Cumulative Sum Problem   2 5 15.38
17
34
4559 A Day at the Races   105 23.14
4461 A Famous Airport Manager   21 19.03
11578 A Famous City   4 493 32.87
26
26
11575 A Famous Equation   1 58 28.88
17
17
11580 A Famous Game   166 26.87
26
34
11582 A Famous Grid   2 159 18.32
17
17
11573 A Famous ICPC Team   5 1921 38.05
1
9
11576 A Famous King’s Trip   17 9.09
11574 A Famous Stone Collector   2 97 41.16
1
26
18466 A Frightening Evening   77 29.28
1
1
10460 A function over factors   1 83 34.86
1
17
1471 A Game of Pearls   38 28.77
1447 A Game of Toy Bricks   36 35.09

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