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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
10438 Crazy texting   2 174 25.98
26
34
26315 Crazy Smoker   24 1353 35.30
4
9
14856 Crazy Shopkeeper   2 620 33.09
17
8
5014 Crazy Receptionist   11 11.11
13447 Crayon   12 147 26.66
23
27
8099 Crash´s number table   1 189 23.49
34
34
7034 Crashing Robots   3 172 48.02
17
1
363 Crane Operator   5 2.71
13745 Crack the Safe   19 610 53.22
14
13
17539 Cows Language   4 36 41.88
21
24
7809 Cow Photographs   2 173 36.01
26
26
7022 Cow Patterns   3 128 26.15
28
28
2714 Cow Cars   6 670 37.51
15
17
8593 Covering the Corral   12 36.96
26744 Coverage   27 36.94
8758 Cover the string   6 223 23.17
14
17
12004 Cousin Wars   2 36 19.86
26
26
29434 Counting WOW-Substrings2   8 107 45.20
13
19
29431 Counting WOW-Substrings   12 149 34.56
10
17
11947 Counting Words   2 169 26.66
17
17
27483 Counting Words   4 49 49.60
17
21
1731 Counting Triangles III   1 266 33.78
1730 Counting Triangles II   2 404 20.82
17
17
6408 Counting Triangles 2   -1 66 34.52
50
50
1724 Counting Triangles   69 13198 33.99
7
21
5464 Counting triangles   3 213 29.16
6
28
4038 Counting The Way of Bracket Replacement   7 442 38.74
26
21
8335 Counting the teams   1 30 34.31
34
50
2150 Counting Subsequences   13 1031 29.42
9
13
2450 Counting Rabbits   9 1240 34.35
10
12
19913 Counting Pythagorean Triples   3 21 14.29
26
42
13015 Counting Primes   33 1476 22.56
16
14
7186 Counting Pascal   2 134 29.77
17
17
20872 Counting Pairwise Coprime Triples   1 50 52.45
34
34
5542 Counting pairs   4 135 26.54
39
36
28599 Counting Magical Permutatitons   7 62 29.08
17
29
13444 Counting Lucky Numbers   3 175 29.95
17
17
4329 Counting K-Rectangle   4 389 30.05
20
28
861 Counting inversions   7 465 19.98
34
29
4882 Counting in a DAG   6 181 11.97
17
26
15429 Counting Ids   15 2008 49.51
5
5
4420 Counting Graphs   76 36.64
10605 Counting Formations   2 17 41.54
34
34
4478 Counting Expressions II   14 17.65
4411 Counting Expressions   29 31.96
20173 Counting Divisors (square)   6 491 21.79
29
38
34096 Counting Divisors (general)   6 376 37.39
38
45
20174 Counting Divisors (cube)   7 407 35.87
21
42
26073 Counting Divisors   3 143 25.82
42
38
3928 Counting Digits   7 1317 46.69
22
26

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