list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
7857 Tower Game (Hard)   59 15.07
34
34
7851 Stacks of Zippy   1 18 17.37
34
34
7826 Tree Isomorphism   6 512 22.37
21
26
7809 Cow Photographs   2 167 35.77
26
26
7807 The Lucky Prisoner   27 9.93
7805 Kitchen Robot   3 88 31.90
9
9
7804 Defense of a Kingdom   39 4889 25.32
10
12
7783 Commuting Functions   44 25.22
7782 Largest Labeled Common Ancestor   1 204 61.73
7779 Stock Chase   71 29.71
17
17
7778 Land Division   1 35 43.21
17
17
7777 National Treasure   32 38.30
7772 Help a researcher   55 46.99
7763 Ingenious Metro   66 66.67
7762 Electric Needs   1 23 41.30
34
17
7761 Jollo   3 394 40.05
17
9
7760 Kids’ Wishes   1 92 31.74
34
1
7759 Hyperactive Girl   1 106 39.75
26
26
7758 Growing Strings   172 31.78
7757 Flowers Flourish from France   12 3146 53.00
7
2
7753 Happy Numbers II   3 647 15.92
23
17
7746 Cocircular Points   59 16.57
42
17
7745 Bingo!   749 38.70
17
1
7742 Onotole needs your help   138 10067 41.04
4
11
7741 Sequence   7 802 30.25
11
23
7740 Fence   19 29.23
7739 Sound   11 450 32.77
20
17
7737 Escape   54 33.70
7734 Twist and whirl - want to cheat   8 229 45.06
24
17
7733 Happy Numbers I   89 9356 53.37
8
8
7718 Number of common divisors   86 6828 25.00
12
13
7709 Jumping Zippy   3 64 55.34
26
34
7704 Civil Engineering   1 634 44.67
9
26
7696 Encryption   3 971 36.00
17
17
7693 Environmental Engineering   11 23.95
7692 Chemistry   69 13.87
7691 Homo or Hetero   22 1639 36.17
15
11
7685 Flowers   4 307 30.12
15
24
7683 Powered and Squared   8 710 27.13
19
16
7680 Electrical Engineering   16 34.64
7676 Sum of Digits   104 4781 38.52
17
20
7668 Pebble Solver   15 1995 50.38
8
11
7666 Telecommunications   22 24.75
7637 Road Map   2 74 53.77
21
17
7632 Architecture   18 22.92
7630 SHOPPERS   148 34.95
7629 Building Ports   43 13.48
7628 Mathematics   2 64 28.57
17
17
7627 Driving Direction   9 40.00
7623 Divisors VI   2 23 14.84
34
34

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