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list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
6340 ZUMA   7 517 46.02
17
34
4828 ZSequence   53 18.02
11384 Zoom Operation   4 16.00
1554 Zoo   115 28.60
9685 Zombie’s Treasure Chest   2 84 13.66
9
17
15439 Zombie Outbreak   5 75 22.86
21
21
10623 ZNANSTVENIK   2 261 31.34
17
26
7019 Zig-Zag rabbit   5 596 36.47
22
19
11946 Zig-Zag Permutation 2   1 7 25.49
26
34
518 Zig-Zag Permutation   1 51 31.25
26
26
35295 zig-zag on the golden river   11 124 22.97
9
15
14905 Zig when you zag   4 37 30.30
30
38
27519 Zeros of the fundamental Fibonacci period   -1 13 21.50
50
50
27484 Zeros in Fibonacci period   2 14 39.08
1
50
13925 ZEROES IN RANGE V2   2 244 37.97
23
17
34502 ZERO TRIPLET   12 84 16.11
17
14
20644 Zero Query   17 772 19.61
31
27
8265 Zero Count   1 15 12.03
50
17
31221 Zen And His Crush   13 416 67.17
8
11
23772 Zamena   3 57 29.93
12
17
17258 Yungom   21 38.27
9686 Yummy Triangular Pizza   485 65.64
26
17
8392 Youtube   4 234 22.99
6
17
14991 Your Rank is Pure (EXTREME ver)   8 25.74
14831 Your Rank is Pure   2 102 49.01
34
25417 You Win!   2 35 35.16
17
17
23806 Yossy, The King of IRYUDAT   3 48 5.51
28
39
6294 Yodaness Level   74 3576 49.31
15
16
3385 Yoda Goes Palindromic !   3 586 30.53
17
17
22531 Yo Yo Jagdish Singh   5 115 44.29
12
12
12808 Yet-Yet Another Counting Problem   2 48 64.13
17
34
28798 Yet Another Xor Sequence   9 116 46.56
9
13
21061 Yet Another Subset Sum Problem   2 48 34.44
50
50
34973 Yet Another Subset Sum Problem   2 4 2.56
26
34
8836 Yet Another Sequence Problem   78 23.49
5979 Yet Another Permutations Problem   5 1358 49.53
7
15
36861 Yet Another Perfect Square Equation   9 61 31.97
11
19
1771 Yet Another N-Queen Problem   2 326 24.55
23
28
12810 Yet Another Multiple Problem   9 333 22.69
21
23
12809 Yet Another Mathematical Problem   2 55 43.74
17
26
3208 Yet Another Longest Palindrome Problem   69 14.04
9842 Yet Another Fancy Game   6 243 23.64
7
32
1739 Yet Another Equation   237 41.51
15453 Yet Another Electronic Device!!!   1 89 47.88
12802 Yet Another Counting Problem   13 46.77
6819 Yet Another Assignment Problem   1 42 11.26
1
15038 Yell Classico   3 214 38.37
17
1
4672 Yanu in Movie theatre   13 1725 44.85
2
28
17819 XYI   4 360 38.55
17
9
5833 XOR Rounds   2 360 30.83
9
13

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