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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
7761 Jollo   3 395 40.03
17
9
7762 Electric Needs   1 23 41.30
34
17
7763 Ingenious Metro   66 67.09
7772 Help a researcher   57 47.57
7777 National Treasure   32 38.30
7778 Land Division   1 36 43.37
17
17
7779 Stock Chase   72 29.75
17
17
7782 Largest Labeled Common Ancestor   1 205 61.93
7783 Commuting Functions   45 24.79
7804 Defense of a Kingdom   39 5083 25.23
10
12
7805 Kitchen Robot   3 88 31.90
9
9
7807 The Lucky Prisoner   27 9.93
7809 Cow Photographs   2 169 35.69
26
26
7826 Tree Isomorphism   8 563 23.08
19
28
7851 Stacks of Zippy   1 17 16.80
34
34
7857 Tower Game (Hard)   59 15.04
34
34
7859 Upper Right King (Hard)   3 166 36.77
26
34
7860 Deal or No Deal   1 9 42.55
7861 UFO   1 34 28.09
17
17
7862 Prisoner of Benda   23 32.47
7864 Four Chips (Hard)   6 149 30.38
31
17
7866 Regular expressions (Hard)   1 138 27.36
28
23
7868 Join   1 17 46.99
34
17
7870 Invisible point   17 1666 42.92
4
18
7874 Calculator   25 22.30
7875 Miles and kilometers   6 603 46.82
9
9
7881 Ljutnja   3 637 24.24
34
21
7882 Tabovi   3 331 49.62
34
34
7884 Crni   55 54.55
7886 Boards (Hard)   35 34.59
7891 Fibonacci Sequence   100 30.28
34
34
7897 Skyline   13 913 32.44
12
27
7934 Operating System Problems (Task Scheduling)   2 138 56.50
17
17
7946 Check Ramsey   2 8 39.13
9
9
7947 Almost square factorisation   5 121 52.08
8
11
7960 Multiplicative Palindrome   30 28.49
7969 A Knights’ Tale   3 76 23.33
17
17
7970 Jumping Beans   1 58 26.80
17
17
7971 The Cyber Traveling Salesman   1 33 35.31
34
17
7972 World of cubes   33 16.00
7973 Sometimes, a penalty is good!   5 1202 29.50
6
8
7974 What’s Next   52 46639 35.23
2
2
7975 Tri graphs   87 4844 29.10
11
10
7976 Sum the Square   7 556 26.17
12
15
8001 Fibonacci Sum   179 6898 27.78
19
19
8002 Horrible Queries   397 10979 29.73
19
18
8004 Tree Topology   2 83 45.37
1
17
8042 Possible Friends   16 1146 37.06
12
10
8044 Fantastic Discovery   3 307 42.58
14
14
8055 Playground   278 25.82

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