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list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
23185 Pencil Game   1 24 28.44
17
17
34612 Can Sharmeen Solve it? [ HARD ]   6 30 28.44
21
24
15267 FRIEND CIRCLE   28 1442 28.43
13
11
8461 Adventure in Moving   44 28.43
17
17
1805 Largest Rectangle in a Histogram   229 8762 28.42
18
23
55 Jasiek   3 479 28.39
21
13
19291 Structures   4 137 28.38
11
17
18302 Identity crisis   2 223 28.37
17
17
16686 Some Sums   3 26 28.37
34
26
8816 Mravograd   28 28.36
17
34
10945 Foodie Golu   63 28.36
7264 Digital LED Number   7 554 28.35
14
4
22275 Collecting Candies   4 70 28.34
21
30
37114 PermRLE   4 15 28.33
27
37
13511 Determine the vismin value !   41 28.32
36583 Game of Square   12 137 28.32
11
11
18 The Bytelandian Cryptographer (Act II)   4 666 28.32
25
1
1552 Mobiles   192 28.32
28
23
13621 Security   27 28.32
26045 GCD OF MATRIX (hard)   4 140 28.31
42
29
3576 Boy Scouts   3 145 28.31
21
30
6949 PIN   145 28.30
17
34
7666 Telecommunications   26 28.30
677 A place for the brewery   219 28.30
17
1
206 Bitmap   247 9662 28.29
15
16
21457 House Fence   5 158 28.28
9
21
17125 Thor vs Frost Giants   1 190 28.28
39
28
24957 Petya Brother and Repairment of Roads   9 177 28.28
24
24
8408 Min Max 01 Path   2 108 28.27
17
17
11477 Meeting For Party   5 490 28.25
17
12
21085 Palindrome Merge   1 35 28.24
17
17
479 Permutation generator   1 135 28.24
21
17
2961 Triomino Game   2 240 28.24
26
42
11407 Tied Down   20 28.24
5153 Compressed String   46 28.21
6500 Counting Diameter   38 28.21
726 Promotion   24 2103 28.18
12
8
15573 Keyboard   16 28.17
18186 Machine Mayhem   4 15 28.17
34
37
2815 Increasing Subsequences   53 2184 28.16
15
22
9640 Equilibrium   3 256 28.14
9
9
26 Build the Fence   37 2268 28.14
22
17
3505 Prime Number Theorem   25 1538 28.13
14
13
2319 Sequence   218 28.12
18637 Lawrence of Arabia   61 28.11
303 The Unstable Cube   1 51 28.10
17
1
21458 Satay Skewer   2 84 28.09
34
17
217 Soldiers on Parade   2 130 28.09
17
12
235 Very Fast Multiplication   25 1362 28.09
25
21
10264 Meteors   45 1636 28.08
26
30

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