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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
12964 Count on a treap   10 30.99
10628 Count on a tree   63 2636 17.43
32
31
10707 Count on a tree II   70 3557 19.62
31
30
11482 Count on a trie   78 12.38
42
50
302 Count on Cantor   155 13081 61.26
13
14
35140 Count Pairs   7 66 25.97
21
24
10463 COUNT PAREN   4 194 60.61
20
21
16062 Count Primes   -2 45 25.20
15556 Count right angle triangles   3 53 24.70
34
42
10354 Count Strings   3 29 4.44
39
39
27268 Count Subsets   19 222 45.65
10
22
20673 Count The Indexes   7 253 29.60
17
30
21414 Count The Indexes 2   5 45 19.13
37
24
11813 Count weighted paths   1 23 40.00
1704 Countdown   306 25.66
22
8
6805 Counter attack   3 177 60.98
17
17
26799 Counter-Smack   3 63 20.65
12
23
12943 Counting   5 82 46.93
8
30
4407 Counting Arborescence   101 34.02
9570 Counting binary strings   7 340 53.14
17
24
34009 Counting Child   18 467 55.71
7
9
9547 Counting d-pairs   2 138 30.45
23
28
6500 Counting Diameter   38 28.21
11676 Counting diff-pairs   14 210 21.52
24
26
3928 Counting Digits   7 1316 46.66
22
26
26073 Counting Divisors   3 143 25.82
42
38
20174 Counting Divisors (cube)   7 407 35.87
21
42
34096 Counting Divisors (general)   6 376 37.39
38
45
20173 Counting Divisors (square)   6 491 21.79
29
38
4411 Counting Expressions   29 31.96
4478 Counting Expressions II   14 17.65
10605 Counting Formations   2 17 41.54
34
34
4420 Counting Graphs   76 36.64
15429 Counting Ids   15 2008 49.51
5
5
4882 Counting in a DAG   6 181 11.99
17
26
861 Counting inversions   7 465 19.98
34
29
4329 Counting K-Rectangle   4 389 30.05
20
28
13444 Counting Lucky Numbers   3 175 29.95
17
17
28599 Counting Magical Permutatitons   7 62 29.08
17
29
5542 Counting pairs   4 135 26.54
39
36
20872 Counting Pairwise Coprime Triples   1 50 52.45
34
34
7186 Counting Pascal   2 134 29.77
17
17
13015 Counting Primes   33 1475 22.55
16
14
19913 Counting Pythagorean Triples   3 21 14.29
26
42
2450 Counting Rabbits   9 1240 34.35
10
12
2150 Counting Subsequences   13 1031 29.42
9
13
8335 Counting the teams   1 30 34.31
34
50
4038 Counting The Way of Bracket Replacement   7 442 38.74
26
21
1724 Counting Triangles   69 13198 33.99
7
21
5464 Counting triangles   3 213 29.16
6
28

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