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list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
5969 Finding Maximum   3 109 30.31
13
23
10931 Online Bridge Searching   5 109 34.79
34
34
19320 Draw Skyline Graph   2 109 20.02
31
26
22253 Distributing sweets   4 109 21.13
21
17
32948 Ada and Fimbers   5 109 26.63
20
23
180 How to pack containers   1 108 36.13
1
1
871 Letter Sequence Analysis   3 108 43.03
17
6
4881 Words on graphs   108 11.94
34
8408 Min Max 01 Path   2 108 28.27
17
17
18286 Gopu and Fishes   2 108 47.40
13
26
37169 Boba Inversion   10 108 33.41
15
20
684 Another Assignment Problem   1 107 12.48
34
1
3832 Kruska   4 107 46.57
17
17
5609 Knight Moves   6 107 40.69
9
20
6893 Power Sums   2 107 57.01
26
28
9084 Journey to Mars   107 23.68
9508 Magic Bitwise AND Operation   1 107 12.66
34
34
20985 Archipelago   6 107 62.96
11
4
21396 Taklu Kuddus   3 107 8.26
30
24
25474 Happiness for all   2 107 40.54
17
12
29434 Counting WOW-Substrings2   8 107 45.20
13
19
35284 Digit Root   13 107 36.34
16
20
332 Hard Question   106 33.05
1
34
8288 Fast Food Restaurant   2 106 29.95
17
34
11769 Kind and gently   106 53.23
17
17
28079 Maximum Child Sum   6 106 23.43
30
30
37474 Shuffling Problem   9 106 23.06
5
8
187 Flat broken lines   2 105 39.78
9
17
386 Help the problem setter   105 45.45
681 Building the Tower   2 105 20.11
17
12
1775 Boolean Logic   1 105 23.35
17
17
2415 Kirchhof Law   2 105 21.42
17
17
3733 Trezor   105 52.34
5163 Tower of Vientiane   105 34.94
6825 Field Plan   1 105 30.22
17
17
21132 Palindromes   1 105 36.20
17
34
23237 Feast Coins   11 105 41.93
19
17
26778 NO GCD   11 105 22.58
29
38
26928 The Crossover   9 105 16.88
22
16
34909 Keyword Finder   105 29.60
6
4
36166 Lucifer and Magical Substrings   14 105 46.38
12
13
2022 Truth Or Lie   104 21.17
3999 FROGGER   3 104 26.72
28
23
4070 Two Professors   104 14.10
4166 Four colors   2 104 22.01
42
42
6499 Breaking Chocolates   1 104 18.89
17
17
7248 Chess part1   104 23.55
10419 Polish Language   104 26.31
12579 Search Insert Delete   4 104 10.62
30
11
14507 GAME2   10 104 25.04
12
11

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