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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
16178 Change   26 25.53
15634 Lennys Lucky Lotto Lists   9 198 33.87
7
14
26843 Who is the Best?   2 40.00
34229 "Operation - Modulo"   14 178 31.33
3
17
4227 "Shortest" pair of paths   3 182 39.65
23
17
4302 (K,N)-Knight   2 300 24.67
17
21
2140 (un)Fair Play   71 38.30
3973 0 0 Pairs   3 757 27.24
13
13
1451 01 Sequence   95 29.57
10676 0110SS   23 1611 42.54
13
9
19971 100pct failure in 72 hours   4 46.67
381 106 miles to Chicago   37 2727 37.44
15
15
9952 111…1 Squared   8 1626 47.70
5
10
5725 123 Sequence   2 113 25.82
1
1
24999 1807   9 448 38.62
16
16
9511 24-Puzzle   16 20.21
27301 2D arrays with XOR property   4 8 52.00
23
39
9721 2s Complement   1 163 31.39
34
34
21409 2x2 Subgrid Sum Problem (generalized)   3 33.33
21407 2x2 Subgrid Sum Problem (medium)   10 19.18
11180 369 Numbers   11 430 15.40
25
26
1448 3D Cover   2 88 26.41
34
26
1296 4 values whose sum is 0   58 4421 26.40
18
13
6690 A - Comparison Expressions   52 33.45
7555 A - Crazy Rows   2 172 45.51
17
21
18467 A Brief Expedition   10 254 56.52
15
14
3377 A Bug’s Life   245 8775 27.54
13
13
9636 A Canvas Building   65 20.51
17
17
1326 A Chase In WonderLand   1 361 13.33
17
1
11904 A Classic Myth - Flatland Superhero   5 46.15
5271 A Coin Game   4 434 32.46
21
30
19551 A Colorful world   2 84 34.20
1
1
35088 A Complex Cone   7 66.67
376 A concrete simulation   13 1583 34.56
11
12
4164 A conjecture of Paul Erdős   8 769 48.51
10
9
22675 A conjecture of Paul Erdős (hard)   2 3 4.84
34
34
34863 A Cumulative Sum Problem   4 14 28.87
34
39
4559 A Day at the Races   105 23.14
4461 A Famous Airport Manager   21 17.96
11578 A Famous City   8 564 32.70
20
23
11575 A Famous Equation   2 64 29.48
34
34
11580 A Famous Game   172 27.32
26
34
11582 A Famous Grid   2 173 17.83
17
17
11573 A Famous ICPC Team   7 1952 37.99
1
8
11576 A Famous King’s Trip   17 8.97
11574 A Famous Stone Collector   3 109 40.23
9
23
18466 A Frightening Evening   96 28.04
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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