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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
12964 Count on a treap   8 48.78
10628 Count on a tree   62 2295 16.96
32
31
10707 Count on a tree II   62 2833 19.07
31
31
11482 Count on a trie   46 29.66
42
50
302 Count on Cantor   154 12979 61.33
13
14
35140 Count Pairs   5 54 25.85
23
23
10463 COUNT PAREN   4 193 61.04
20
21
16062 Count Primes   -2 43 24.08
15556 Count right angle triangles   3 44 24.35
34
42
10354 Count Strings   3 17 7.88
39
39
27268 Count Subsets   19 213 44.96
10
22
20673 Count The Indexes   7 240 29.15
17
30
21414 Count The Indexes 2   5 41 18.11
37
24
11813 Count weighted paths   1 16 51.52
1704 Countdown   298 25.14
26
9
6805 Counter attack   3 173 60.53
17
17
26799 Counter-Smack   3 56 19.96
12
23
12943 Counting   5 79 47.71
8
30
4407 Counting Arborescence   100 34.02
9570 Counting binary strings   7 338 53.04
17
24
34009 Counting Child   17 376 55.53
8
10
9547 Counting d-pairs   2 134 30.81
23
28
6500 Counting Diameter   36 40.78
11676 Counting diff-pairs   14 183 22.67
24
26
3928 Counting Digits   7 1082 44.00
22
26
26073 Counting Divisors   3 113 24.78
39
34
20174 Counting Divisors (cube)   6 345 34.38
17
41
34096 Counting Divisors (general)   4 307 34.74
40
43
20173 Counting Divisors (square)   6 417 21.58
26
36
4411 Counting Expressions   29 42.47
4478 Counting Expressions II   14 35.29
10605 Counting Formations   2 14 57.50
34
34
4420 Counting Graphs   54 34.33
15429 Counting Ids   15 1899 50.02
5
5
4882 Counting in a DAG   6 167 11.88
17
26
861 Counting inversions   6 458 20.04
34
28
4329 Counting K-Rectangle   4 387 30.02
20
28
13444 Counting Lucky Numbers   3 171 30.12
17
17
28599 Counting Magical Permutatitons   6 55 28.12
17
28
5542 Counting pairs   4 129 26.33
39
36
20872 Counting Pairwise Coprime Triples   1 43 51.56
34
34
7186 Counting Pascal   2 125 29.24
17
17
13015 Counting Primes   32 1314 21.65
16
14
19913 Counting Pythagorean Triples   3 16 14.23
26
42
2450 Counting Rabbits   8 1212 34.02
10
12
2150 Counting Subsequences   12 1023 29.49
8
13
8335 Counting the teams   1 23 45.61
34
50
4038 Counting The Way of Bracket Replacement   7 435 38.74
26
21
1724 Counting Triangles   69 13014 34.03
7
21
5464 Counting triangles   3 202 28.75
6
28

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