list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
45 Commedia dell Arte   205 37.90
1
17
185 Chase   1 209 24.52
1
34
201 The Game of Polygons   1 247 39.80
1
17
329 Calls   1 117 28.22
1
17
362 Ignore the Garbage   1 397 44.07
1
17
515 Collatz   1 426 44.67
1
6
688 Toy Cars   412 15.49
1
17
1480 Let us count 1 2 3   1 50 12.48
1
34
1675 Fusion Cube   1 77 51.16
1
26
1784 IOICamp Sequence   1 311 12.82
1
17
1876 Dragon Curves   1 167 49.63
1
34
1965 Set Cover   1 24 11.93
1
17
2009 Cryptography   1 128 4.39
1
34
2038 Rectangle Tiling   2 104 41.89
1
1
2529 Model Rocket Height   1 77 53.42
1
17
2649 Weird sorting   1 56 25.94
1
34
2878 Knights of the Round Table   1 128 9.69
1
17
3249 Typesettin   1 30 50.00
1
1
3251 Slink   14 45.45
1
1
3394 Lagrange’s Four-Square Theorem   3 455 44.53
1
9
3909 CALCULATE POW(2004,X) MOD 29   1 262 56.78
1
17
4195 GCD Determinant   1 248 45.44
1
34
4565 What is your Logo   2 903 45.91
1
13
4871 Bridge   1 147 23.71
1
34
4951 Bridges! More bridges!   1 37 14.25
1
34
5010 Lost in Madrid   1 183 30.62
1
1
5148 Get-Together at Stockholm   1 47 45.37
1
17
5463 Bird or not bird   2 110 40.06
1
17
5725 123 Sequence   2 115 23.49
1
1
6692 B - Esperanto Lessons   1 60 62.39
1
17
6819 Yet Another Assignment Problem   1 39 11.37
1
7200 Strange Calendar   1 67 46.86
1
1
7240 Playground   2 195 41.99
1
6
7249 Perfume   2 83 15.59
1
17
7507 Wonderful Randomized Sum   1 282 38.01
1
1
7600 Milk Trading   4 173 30.71
1
28
7704 Civil Engineering   1 459 47.63
1
34
8004 Tree Topology   1 74 47.28
1
1
8286 Perfect Matching   83 18.48
1
17
8330 Giant fountain   1 26 46.74
1
17
8407 Candies and Milestones   1 467 21.54
1
17
8420 Finding Minimum   1 69 36.36
1
17
8769 String distance   1 16 54.05
1
17
8843 Complete the Set   1 48 32.18
1
17
9042 HQNP Incomputable   4 44 34.48
1
9
9097 Derangements HARD   1 63 51.10
1
17
9430 The game of 31   -1 150 38.60
1
9
9507 Mario and Mushrooms   333 56.83
1
34
9892 Pool construction   1 77 54.75
1
34
9934 Alice and Bob   1 76 25.77
1
34

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