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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
13167 Totient in permutation (hard)   7 20.57
16030 Psycho   13 822 20.57
10
11
12407 Johnny The Gambler   7 949 20.59
8
6
28009 Balance the parentheses   17 20.59
1466 Blue Mary Needs Help Again   4 202 20.61
28
34
3544 Binary Search Tree   6 586 20.62
11
20
31 Fast Multiplication   48 8609 20.64
15
12
5902 Tri   1 78 20.64
34
50
5972 Maximum Sum Sequences   14 1140 20.64
15
18
8795 Twenty Questions   1 40 20.65
3579 Disjoint Paths   4 311 20.67
24
27
913 Query on a tree II   115 4363 20.68
24
21
228 Shamans   139 20.68
9
9
12746 Colorful Circle (EASY)   5 463 20.68
28
23
11470 To the moon   8 790 20.69
24
21
5104 Spam Detection   14 20.69
33372 Lannister Army   11 337 20.73
19
29
9519 Distinct Submatrices   1 23 20.74
50
50
35988 Power Play   1 22 20.74
1
1
88 Which is Next   126 20.75
34
34
139 The Long and Narrow Maze   1 207 20.75
17
17
25339 Eefun and Doors   1 6 20.75
34
17
34863 A Cumulative Sum Problem   5 27 20.77
34
42
3309 Bulletin Board   19 20.80
21640 Nested Palindromes   2 25 20.81
38
38
374 Count maximum matrices   234 20.82
1
17
13364 THE N WITTY FRIENDS   1 44 20.85
17
17
27377 Bono v3   2 62 20.85
12
23
17755 Tree and Palindrome   1 148 20.86
1
1
30826 Bernoulli numbers   4 7 20.88
23
12
11461 Book Shelves   2 72 20.89
17
17
1730 Counting Triangles II   2 399 20.89
17
17
10649 Mirror Number   5 161 20.92
13
30
25862 Divisor Game   5 50 20.93
17
17
36123 Plant the potatoes   2 17 20.93
17
26
34743 Popatlal ki shaadi   17 307 20.93
14
13
35631 Moon Safari (Extreme)   2 9 20.94
42
42
14892 Good Aim   -1 34 20.95
34
17
21599 POWER LEFT   1 108 20.96
21
14
3196 Divisibility Relation   4 284 20.96
17
37
24247 Monkey King   2 117 20.97
14
14
18940 Face the mate   2 156 20.97
17
17
4681 Twice   5 282 20.97
24
27
13808 Colors   3 25 20.99
9
26
6700 Make it Smooth   1 69 20.99
17
17
12889 MAD   2 163 20.99
1
1
2829 Time Limit Exceeded   3 244 21.00
34
34
3638 Word Counting   7 2620 21.04
10
6
6560 N DIV PHI_N (Hard)   4 164 21.04
17
28
24313 Kule   2 16 21.05
17
26

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