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list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
18829 Special Set   8 118 27.10
11
26
18667 Product of factorials (hard)   3 46 27.10
28
34
1027 Fool the Police   25 1655 27.09
18
23
10395 Sum of divisors!   25 2384 27.07
16
18
7405 Delicious Pancakes   1 736 27.06
11
11
10233 Magical Bridges   9 170 27.03
29
24
12249 Spiderman vs Sandman   111 27.03
1
1
912 Submatrix of submatrix   1 174 27.01
34
17
34020 Ada and Pet   29 655 27.01
13
19
1877 Enrich my purse   153 27.01
15728 The Sierpinski Fractal   6 120 27.00
13
9
3442 The last digit   190 30123 26.99
9
8
51 Fake tournament   43 1819 26.96
18
19
12008 Fibonacci recursive sequences (medium)   50 26.95
75 Editor   51 26.94
18176 FRIENDSHIP!!!   16 631 26.94
15
21
11814 Eko   172 16737 26.94
14
14
12660 Co-Prime   4 285 26.93
9
17
3273 Order statistic set   160 3451 26.91
22
20
23134 Help Me Please!   33 26.90
1
17
40192 Battle Of The Bastards - Kings Vs Rooks   3 18 26.88
34
34
3490 Hidden Triangle   12 26.87
1452 Birthday Cake   112 26.86
17
34
27098 Oil   1 88 26.84
17
34
32446 Sanvi and Magical Numbers   1 13 26.83
50
34
35669 Consecutive Letters   8 589 26.83
17
20
705 New Distinct Substrings   42 3897 26.82
26
25
8238 N-Factorful   72 2796 26.82
18
17
14833 The Fox and the Wolf   17 26.81
17
17
14930 Princess Farida   274 12258 26.80
7
10
3645 Farthest Headquarters   60 26.80
15242 Betos Quest   1 32 26.79
34
26
2728 Breaking in   8 304 26.79
30
19
1873 Accumulate Cargo   2 91 26.79
34
9
5703 Primes of Lambda   2 25 26.79
42
42
10576 Exclusive Security   -1 99 26.77
8108 POLYU   36 26.76
26706 Sort Machine   4 215 26.76
1
9
10640 The Wild Wizard   97 26.76
1
1
105 Alice and Bob   3 179 26.74
42
42
36144 The Cow Gathering   2 38 26.74
17
34
14845 Center of Mass   2 136 26.73
17
1
3999 FROGGER   3 104 26.72
28
23
11770 Lifesavers   1 82 26.71
17
2916 Can you answer these queries V   52 2891 26.70
23
24
13447 Crayon   12 147 26.70
23
27
1689 Hard Problem   -1 19 26.67
17
34
3749 Subset Sums   74 4226 26.67
17
20
4154 IZBORI   42 26.67
7333 Shuffle Music   9 26.67

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