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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
13369 Cut on a tree   12 6.63
26799 Counter-Smack   3 63 20.65
12
23
2007 Another Very Easy Problem! WOW!!!   17 792 39.04
13
28
28632 Ghost Town   11 291 41.07
23
10
36789 Linear Diophantine Equation   3 12 16.57
50
50
7186 Counting Pascal   2 134 29.77
17
17
16245 Living with Courage   20 580 37.60
10
13
151 The Courier   38 1070 35.64
22
23
412 K-path cover   186 20.48
1
50
1448 3D Cover   3 100 27.12
28
17
2714 Cow Cars   6 670 37.51
15
17
36144 The Cow Gathering   2 38 26.74
17
34
7809 Cow Photographs   2 173 36.01
26
26
17539 Cows Language   4 36 41.88
21
24
5542 Counting pairs   4 135 26.54
39
36
11676 Counting diff-pairs   14 210 21.52
24
26
7022 Cow Patterns   3 128 26.15
28
28
2173 Car Plates Competition   1 261 42.05
17
17
7676 Sum of Digits   106 5038 38.80
17
20
38331 Comet Number   7 89 33.12
7
15
38365 Asacoco Prescription   2 46 19.71
17
26
38389 Phasmophobia   5 30 31.58
39
39
3505 Prime Number Theorem   25 1538 28.13
14
13
1728 Common Permutation   26 4201 46.71
6
6
4004 Exploding CPU   146 46.49
22528 Paths in a Tree   3 45 26.64
21
21
13768 An Experiment by Penny   8 607 59.70
6
15
13769 Roommate Agreement   52 1493 31.45
11
16
13780 Audition   18 656 24.08
17
17
13447 Crayon   12 147 26.66
23
27
5014 Crazy Receptionist   11 11.11
14856 Crazy Shopkeeper   2 620 33.09
17
8
12746 Colorful Circle (EASY)   5 484 20.91
28
23
10509 Cards   78 13539 34.03
4
4
25924 Cricket Selection   1 80 25.62
12
26
18408 The Valentine Confession   9 581 28.58
15
21
7034 Crashing Robots   3 172 48.02
17
1
3484 Crossbits   3 99 15.25
23
15
26928 The Crossover   9 105 16.88
22
16
66 Cross-country   38 4115 64.54
11
12
2009 Cryptography   1 142 4.79
1
34
17 The Bytelandian Cryptographer (Act I)   9 1391 41.45
15
26
18 The Bytelandian Cryptographer (Act II)   4 666 28.32
25
1
19 The Bytelandian Cryptographer (Act III)   1 129 34.05
17
26
20 The Bytelandian Cryptographer (Act IV)   2 60 25.77
21
34
5144 Cryptography Reloaded (Act I)   34 26.43
5154 Cryptography Reloaded (Act II)   36 27.49
7035 The Embarrassed Cryptographer   5 358 32.25
13
13
26315 Crazy Smoker   24 1353 35.30
4
9
3466 Another Longest Common Subsequence Problem   6 5.66

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