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list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
36226 Reduce the array   15 798 30.12
4
6
8056 Regex Edit Distance   2 36 43.00
34
42
10113 Regular Convex Polygon   101 30.40
7866 Regular expressions (Hard)   1 140 27.33
28
23
14944 Reindeer Games   2 116 22.00
17
17
26344 Related or not   9 369 52.35
8
9
70 Relations   2 254 28.80
9
17
220 Relevant Phrases of Annihilation   699 23.26
26
26
1707 Reliable Nets   4 342 31.51
28
23
3865 Reljef   3 94 39.09
26
17
10114 Remoteland   3 135 56.00
34
28
704 Remove The String   13 663 15.28
19
27
130 Rent your airplane and make money   88 3387 28.64
18
17
3936 Repair City Hall   4 248 50.82
5
1
7402 Repair Depots   14 43.90
4410 Repair the Door   62 22.96
9751 Repairing Roads   1 21 11.02
17
34
687 Repeats   2 982 25.39
30
38
8982 Representatives   20 442 31.50
17
16
11906 Rescue On Time   -1 26 33.00
34
17
10449 Resource Management   15 18.00
11117 Restacking haybales 2012   257 59.64
3582 Restaurant Tab   24 21.90
23507 Retrovirus   6 94 36.11
15
13
14820 Return of the Digger   2 13 17.59
17
17
26119 Revenge of Arjuna   2 37 36.96
17
17
9693 Revenge of Fibonacci   2 97 31.16
34
34
8418 Revenge of the squares   1 89 36.83
17
17
8433 Revenge of the squares (variation)   1 490 49.27
17
17
3009 Revenge of Voronoi   14 30.26
10464 Reverse Engineering   4 142 48.24
17
28
14973 Reverse Fox Hunt   2 81 46.30
17
9
8578 Reverse the Sequence   1 89 38.72
34
50
118 Rhombs   113 42.32
1
34
36324 Richest_Beggar   7 183 35.41
4
9
34636 Richie Rich and Keen Bean   51 45.24
17
23
21966 Ricochet Robots   3 26 50.00
23
12
4574 Riding in cycles   44 23.96
32201 Right Shift   -1 221 11.26
17
8
3983 Right Triangle Counting   3 190 17.72
30
21
36132 Rightful Distribution   10 157 40.91
8
8
21853 Rivals   23 511 33.85
17
24
18201 RK Sorting   20 1382 38.78
21
12
7637 Road Map   3 79 54.90
20
20
178 Road net   12 2394 49.63
9
8
9969 Road Network   1 308 22.00
17
9
27099 Road Times   1 7 32.50
8329 Road trip   1 82 39.22
26
26
338 Roads   37 1398 23.96
17
22
7025 Roads in Berland   1 135 33.29
17
34

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