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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
16178 Change   22 31.37
15634 Lennys Lucky Lotto Lists   9 178 33.16
6
14
26843 Who is the Best?   2 50.00
34229 "Operation - Modulo"   7 84 47.72
4
15
4227 "Shortest" pair of paths   3 169 38.76
23
17
4302 (K,N)-Knight   292 24.57
9
9
2140 (un)Fair Play   71 38.30
3973 0 0 Pairs   2 732 27.39
1
1
1451 01 Sequence   93 30.06
10676 0110SS   15 1476 43.26
12
6
19971 100pct failure in 72 hours   4 46.67
381 106 miles to Chicago   20 2368 36.54
15
12
9952 111…1 Squared   6 1494 47.29
3
9
5725 123 Sequence   2 111 26.16
1
1
24999 1807   6 386 37.84
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   6 274 15.34
24
23
1448 3D Cover   1 82 27.07
50
34
1296 4 values whose sum is 0   42 3968 26.44
17
13
6690 A - Comparison Expressions   51 33.58
7555 A - Crazy Rows   2 167 45.35
17
21
18467 A Brief Expedition   8 241 57.76
16
13
3377 A Bug’s Life   151 6668 26.24
14
13
9636 A Canvas Building   65 20.91
17
17
1326 A Chase In WonderLand   1 336 13.29
17
1
11904 A Classic Myth - Flatland Superhero   5 46.15
5271 A Coin Game   4 399 29.60
21
30
19551 A Colorful world   2 76 36.18
1
1
376 A concrete simulation   11 1546 34.72
11
9
4164 A conjecture of Paul Erdős   3 558 50.10
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   4 489 32.73
26
26
11575 A Famous Equation   1 58 28.88
17
17
11580 A Famous Game   165 26.88
26
34
11582 A Famous Grid   2 157 18.08
17
17
11573 A Famous ICPC Team   5 1917 37.98
1
9
11576 A Famous King’s Trip   17 9.09
11574 A Famous Stone Collector   2 96 40.87
1
26
18466 A Frightening Evening   74 28.75
1
1
10460 A function over factors   1 82 34.79
1
17
1471 A Game of Pearls   38 28.77
1447 A Game of Toy Bricks   36 35.09
1419 A Game with Numbers   62 8378 61.93
2
10
4060 A game with probability   117 23.05

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