list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
227 Ordering the Soldiers   22 1478 33.31
21
23
28740 Try to complete   22 674 25.62
23
23
1805 Largest Rectangle in a Histogram   229 8760 28.42
18
23
703 Mobile Service   7 1175 23.16
23
23
7741 Sequence   7 814 30.33
11
23
10622 DIFERENCIJA   8 608 46.51
21
23
12810 Yet Another Multiple Problem   9 333 22.66
21
23
18187 Ingredients   10 295 31.69
21
23
18336 Search Bit Sum   8 166 37.34
28
23
18917 Dukkar and Pikka   5 314 56.34
7
23
33777 NT Games   12 77 41.92
19
23
34551 Stopping-off Cities   6 73 18.01
26
23
2916 Can you answer these queries V   52 2890 26.70
23
24
3477 Baby   28 955 46.67
21
24
2530 Tiling a Grid With Dominoes   60 2440 64.85
16
24
2699 Recursive Sequence (Version II)   16 1013 26.12
26
24
41 Play on Words   43 3314 19.59
21
24
13868 Roads of NITT   43 625 29.39
24
24
1108 Card Trick   68 2245 50.38
21
24
7 The Bulk!   6 534 14.90
30
24
116 Intervals   5 1199 24.27
21
24
964 Entrapment   6 340 23.99
17
24
2174 Drop the Triples   5 122 29.04
21
24
4302 (K,N)-Knight   3 315 25.20
14
24
4454 Brackets II   8 417 36.21
26
24
9458 Ghosts having fun   10 224 12.22
16
24
12304 Smallest Inverse Sum of Divisors   5 100 26.52
17
24
13105 DNA   5 692 33.58
11
24
13469 FOREVER ALONE   7 95 39.58
24
24
13838 Mosty! Find Gn   5 564 49.87
9
24
14168 Amazing Factor Sequence (medium)   9 231 29.52
21
24
16277 Little Red-Cap   4 225 34.75
24
24
16825 Divisors   6 93 17.93
20
24
17539 Cows Language   4 36 41.88
21
24
18662 Product of factorials (again)   3 86 31.50
11
24
19308 LCM   8 390 18.71
17
24
19416 Potions Class   4 159 37.40
14
24
21396 Taklu Kuddus   3 107 8.26
30
24
21414 Count The Indexes 2   5 45 19.13
37
24
21853 Rivals   23 511 33.85
17
24
26305 Lights On!   6 323 26.13
17
24
27450 Changu with subsequences   8 38 36.31
17
24
28601 Village Fair   5 118 18.71
21
24
30783 Ada and Cucumber   6 110 19.44
34
24
33820 Ada and Game of Divisors   4 124 46.30
24
24
34612 Can Sharmeen Solve it? [ HARD ]   6 30 28.44
21
24
35140 Count Pairs   7 66 25.97
21
24
36860 Epidemic Control   6 36 58.59
27
24
38294 Square Pentagon   5 114 44.29
17
24
1043 Can you answer these queries I   569 14329 19.05
25
24

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