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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
22784 Pythagorean Triple Counting   4 29 55.51
30
17
23742 Dolan and Nephews   5 48 42.42
30
27
36718 Fashionable self-describing numbers   6 51 17.33
30
34
8406 Temple Queues   14 288 19.63
31
33
10707 Count on a tree II   63 2943 18.82
31
31
286 Selfish Cities   1 698 39.03
31
31
416 Divisibility by 15   5 1018 15.45
31
26
1482 A short vacation in Disneyland   5 225 14.63
31
24
4180 Pizza Location   2 571 18.48
31
17
10570 Longest Common Substring   4 774 28.86
31
31
19320 Draw Skyline Graph   2 102 19.57
31
26
20170 Coloring Segments   5 87 20.40
31
34
21643 Unhappy Numbers   6 45 36.75
31
31
31591 All in One   7 104 8.73
31
24
32577 Ada and Terramorphing   10 236 11.91
31
23
58 Crime at Piccadily Circus   3 636 13.91
31
21
7864 Four Chips (Hard)   6 134 29.98
31
17
11695 A Summatory (HARD)   6 94 30.18
31
29
9066 Sum of Distinct Numbers   25 334 14.30
32
32
34373 Clickbait   8 22 32.69
32
19
36671 Bipartite Permutation (Hard)   6 51 17.91
32
34
7232 Inversion Sort   5 156 17.60
32
23
12005 Grass Planting   10 507 43.75
32
17
10628 Count on a tree   63 2374 17.02
32
31
375 Query on a tree   164 5586 17.52
33
27
13 Hotline   2 199 16.49
34
23
85 Dice Contest   44 21.14
34
34
88 Which is Next   1 127 20.62
34
34
99 Bus   182 22.10
34
17
140 The Loner   156 22.76
34
17
145 Aliens   2 419 29.78
34
42
149 Fencing in the Sheep   3 94 12.39
34
17
202 Rockets   -1 56 12.18
34
34
208 Store-keeper   2 122 15.28
34
26
215 Panic in the Plazas   83 20.53
34
34
226 Jewelry and Fashion   1 20 27.84
34
50
262 Connections   1 111 28.84
34
34
278 Bicycle   56 13.11
34
1
309 The Room Pattern   1 44 15.90
34
17
369 Math I   87 25.41
34
34
385 Game schedule required   148 28.66
34
1
389 Use of Hospital Facilities   1 50 11.68
34
26
398 Roll Playing Games   117 14.15
34
17
414 Equatorial Bonfire   1 71 30.48
34
17
484 Fossil in the Ice   434 22.09
34
17
598 Increasing Subsequences   142 34.21
34
34
684 Another Assignment Problem   1 103 12.40
34
1
687 Repeats   1 888 25.23
34
42
707 Triple-Free Sets   1 161 40.53
34
34
733 Mountain Walking   1 750 25.35
34
26

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