list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
22379 Mobile Company 2   3 73 30.70
17
17
25337 Eefun is not so Fun   2 160 30.70
5
26
11834 DOJO Corridor II   3 27 30.69
42
34
36797 GOOD COMMUNICATION   3 16 30.69
17
17
9644 Imperialism   5 174 30.69
8
14
5911 Square-free Integers Factorization   1 20 30.67
17
34
30787 Ada and Aphids   11 211 30.67
27
26
1833 Sudoku   1 54 30.66
17
17
2882 The Warehouse   1 27 30.66
34
17
9895 Tracking RFIDs   52 30.66
1421 Goods   148 30.65
1
34
31557 Halum and Candies   1 69 30.65
20970 Alia and Handsome Devil   5 399 30.65
17
12
3713 Primitive Root   6 615 30.64
15
27
1772 Find The Determinant II   102 30.63
1
50
1788 Fractan   50 30.63
17
17
182 Window   1 50 30.62
17
34
41657 GCD Goodness   2 30 30.62
17
26
32103 Degree of a Tree   15 231 30.62
13
12
9529 Maya Calendar   2 221 30.60
17
12
4103 Extend to Palindrome   44 2591 30.60
16
17
10424 To Poland   3 273 30.59
17
6
1793 Text Generater II   57 30.59
17
17
13007 Easy Programming Tutorials   2 281 30.58
17
17
7583 Cubic Eight-Puzzle   1 31 30.57
50
34
1713 Funny scales   12 563 30.57
17
16
7891 Fibonacci Sequence   102 30.56
34
34
34282 Traffic Planning   3 18 30.56
6
1
20172 Divisiblity by 3   11 589 30.54
14
10
3385 Yoda Goes Palindromic !   3 586 30.53
17
17
28451 Ada and Cities   11 154 30.51
21
19
11948 Dark Assault   1 31 30.47
17
17
8425 Coloring Trees   10 324 30.46
20
31
196 Musketeers   2 510 30.46
17
34
1837 Pie   60 4132 30.45
18
15
9547 Counting d-pairs   2 138 30.45
23
28
6852 Fish   4 186 30.44
26
21
37175 Submatrix Sum of a Sparse Matrix   -1 11 30.43
40379 Arithmetic Progression Query   9 91 30.43
15
15
10570 Longest Common Substring   5 922 30.41
31
32
10113 Regular Convex Polygon   101 30.40
6829 Polynomial   2 194 30.39
17
17
21854 TEMPLE_RUN   3 34 30.38
17
23
1162 Tic-Tac-Toe ( II )   8 2411 30.37
17
10
16776 Modems   13 222 30.35
19
15
7864 Four Chips (Hard)   6 167 30.35
31
17
3927 Polygon on the Grid   23 30.34
7741 Sequence   7 814 30.33
11
23
34356 Ludic Numbers (medium)   5 61 30.32
36
39
383 European railroad tracks   227 30.31

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