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list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
35295 zig-zag on the golden river   11 124 22.97
9
15
40083 Just Primes   11 124 29.90
15
17
4390 Cards shuffing   2 123 27.18
26
21
7947 Almost square factorisation   5 123 52.29
8
11
29458 Alphabetic Rope2   2 123 49.85
34
34
30692 Ada and Rain II   3 123 51.60
12
23
31036 Ada and Mulberry   6 123 12.76
31
28
35954 New Data Type   1 123 18.92
6
6
1431 Projections Of A Polygon   2 122 10.39
12
6
2174 Drop the Triples   5 122 29.04
21
24
6169 Standing Sequence   2 122 28.60
34
39
17660 The Bridge to Home   5 122 36.19
23
34
19976 HYPERCUBES   1 122 45.32
1
17
398 Roll Playing Games   121 14.67
34
17
4305 Drilling   3 121 20.15
17
34
13799 Naive Loki   1 121 36.10
1
17
9097 Derangements HARD   1 120 50.00
1
17
9124 Sightseeing   120 17.92
10579 Desrugenstein   2 120 49.34
17
17
10730 Michel and the championship   6 120 11.60
9
9
15728 The Sierpinski Fractal   6 120 27.00
13
9
49 Hares and Foxes   1 119 7.85
17
26
5463 Bird or not bird   2 119 38.48
1
17
25236 Defense of a kingdom 2   3 119 45.51
1
9
229 Sorting is easy   1 118 18.11
17
1
12277 The Trip   118 31.34
17
17
13789 Loving Power   4 118 39.59
12
23
18829 Special Set   8 118 27.10
11
26
23963 Easy Factorials   10 118 17.20
27
26
28601 Village Fair   5 118 18.71
21
24
35145 Love Guru   5 118 23.11
12
12
866 DNA Translation   117 21.44
1966 Ski Valley   117 18.43
4477 Flower growing   117 22.21
21456 I Ken Bit Yu   5 117 30.96
9
21
24247 Monkey King   2 117 21.08
14
14
34826 Shinchan and Magic Card   6 117 45.52
6
15
42049 Maximum Sum of the Array   2 117 8.85
1
3
119 Servers   116 19.59
17
17
2038 Rectangle Tiling   2 116 41.61
1
1
8321 Chocolate distribution   116 23.97
10112 Peer Review   116 32.79
14944 Reindeer Games   2 116 22.00
17
17
17150 Palin Square   6 116 31.96
21
30
28798 Yet Another Xor Sequence   9 116 46.56
9
13
1554 Zoo   115 28.60
3314 Umnozak   115 30.02
42
17
7249 Perfume   2 115 16.00
1
17
12007 Fibonaccibonacci (easy)   1 115 29.17
1
34
12244 Natalia Has Another Problem   6 115 47.52
17
14

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