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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
871 Letter Sequence Analysis   3 107 42.86
17
6
904 Image Perimeters   3 331 59.24
17
17
967 Parking Bay   3 556 49.22
12
23
1003 Little Quilt   3 169 39.89
21
11
1268 CN Tower (Easy)   3 1107 30.64
8
6
1448 3D Cover   3 93 26.61
34
26
1461 Greedy Hydra   3 193 33.50
27
30
1470 Another Sequence Problem   3 191 24.49
43
27
1475 Play with Digit Seven   3 125 36.90
34
14
1553 Backup Files   3 810 20.01
9
42
1723 Bee Maja   3 558 53.50
17
21
1776 DNA Laboratory   3 110 11.20
34
23
1802 Edge   3 417 59.70
6
12
1843 Leonardo Notebook   3 362 33.99
17
34
2127 Rain   3 433 40.34
17
14
2138 Pibonacci   3 43 14.58
26
39
2139 Gossipers   3 591 31.70
21
26
2175 Emoticons   3 328 21.95
23
28
2525 Encoding   3 745 29.02
12
12
2527 Flipping Burned Pancakes   3 258 52.38
17
17
2715 Glasnici   3 328 37.50
26
30
3007 Oil Company   3 178 25.08
23
28
3023 Binary multiplication   3 226 24.96
17
17
3106 Dictionary Subsequences   3 165 18.14
17
17
3110 Palindromic Number   3 94 20.15
9
17
3111 Stabards   3 160 43.10
12
23
3133 Here We Go(relians) Again   3 167 39.89
12
12
3253 Electronic Document Security   3 149 60.78
23
6
3385 Yoda Goes Palindromic !   3 581 30.42
17
17
3389 The Knights of the Round Circle   3 444 67.25
6
23
3459 SkyScrapers   3 358 38.62
17
17
3464 Clock   3 49 35.35
34
9
3484 Crossbits   3 97 14.78
23
15
3565 Choosing Gloves   3 84 22.88
17
34
3576 Boy Scouts   3 140 27.92
21
30
3577 Parity   3 77 19.52
17
34
3591 Patting Heads   3 648 35.21
17
17
3865 Reljef   3 94 39.22
26
17
3870 Military Story   3 282 28.76
21
12
3902 Fight with functions   3 20 6.55
42
34
3932 Point Connection Game in a Circle   3 750 35.38
13
21
3940 Sum of Primes   3 228 62.94
9
9
3983 Right Triangle Counting   3 189 18.05
30
21
3999 FROGGER   3 97 27.01
28
23
4036 Cuckoo Hashing   3 151 27.58
17
6
4227 "Shortest" pair of paths   3 211 40.38
23
17
4302 (K,N)-Knight   3 311 24.80
14
24
4305 Drilling   3 100 17.99
17
34
4413 Gem   3 97 40.12
23
12
4457 Shopping II   3 147 35.01
17
1

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