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list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
6917 Catch Sheep   2 40 25.41
34
34
7109 Indicator of progression   2 325 23.89
17
17
7168 Termites strike back   2 19 39.66
17
34
7186 Counting Pascal   2 134 29.77
17
17
7209 Closest Triplet   2 334 29.83
24
21
7240 Playground   2 208 41.97
1
6
7249 Perfume   2 115 16.00
1
17
7250 Blocks for kids   2 102 40.56
23
23
7297 Placing Coins on a Grid   2 61 32.53
17
17
7356 Iterated Bitcount Function   2 36 16.47
42
34
7404 Just on Time   2 16 35.38
17
17
7408 Camelot   2 64 30.88
17
17
7555 A - Crazy Rows   2 186 25.98
17
21
7623 Divisors VI   2 29 16.38
34
34
7628 Mathematics   2 67 29.05
17
17
7809 Cow Photographs   2 173 36.01
26
26
7934 Operating System Problems (Task Scheduling)   2 142 53.65
17
17
7946 Check Ramsey   2 13 19.48
9
9
8004 Tree Topology   2 87 46.61
1
17
8056 Regex Edit Distance   2 36 43.00
34
42
8063 Dividing Stones   2 167 26.30
17
17
8064 Mixing Chemicals   2 187 24.16
26
34
8093 Sevenk Love Oimaster   2 580 24.55
28
28
8100 Shifting Lights   2 229 31.20
17
17
8129 Sky Lift   2 142 25.60
24
19
8184 Bureaucracy   2 571 29.72
6
17
8283 Non-Decreasing Numbers   2 31 20.49
50
50
8285 Rectangles in a Matrix   2 7 17.11
17
34
8288 Fast Food Restaurant   2 106 29.95
17
34
8334 Enumeration of rationals   2 92 17.28
8407 Candies and Milestones   2 480 21.94
6
23
8408 Min Max 01 Path   2 108 28.27
17
17
8410 Snaky Numbers   2 84 38.82
34
34
8434 Kolica   2 68 40.10
34
17
8467 GRADE POINT AVERAGE   2 634 30.08
8
3
8558 Linear Equation Solver   2 22 34.09
17
34
8574 Four in a row   2 23 17.12
26
17
8586 Factorial factorisation   2 45 20.18
17
17
8668 THE BLACK AND WHITE QUEENS   2 84 43.03
21
34
8794 Swimming Jam   2 51 33.33
26
26
8910 Probablistic OR   2 176 58.46
17
30
9046 Clock Hands   2 378 22.32
34
26
9050 Tohu again   2 865 29.24
17
12
9081 Snail family problems   2 85 23.48
34
17
9098 Long Common Subsequence   2 199 36.64
34
17
9120 Magic Star   2 174 52.72
34
1
9138 Pyramid Sums 2   2 114 33.61
23
34
9213 Mafia   2 53 23.93
17
26
9219 Nikhil Problem   2 225 45.88
17
17
9334 Point in tetrahedron   2 141 57.59
9
17

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