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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
391 Railroads   84 17.69
17
17
15574 Railway   2 17 31.82
34
34
2127 Rain   3 431 40.31
17
14
4458 Rainbow   1 34 19.46
17
34
3724 Rainbow Ride   8 477 36.12
19
19
6906 Raining Parabolas   2 251 21.41
26
26
22177 RajaRani   3 3 4.35
17
17
18149 Rama and Friends   10 987 28.52
14
12
36937 Random Magic Trick   2 12 40.00
17
17
36142 Random modulo n   14 72 57.84
8
16
407 Random Number   43 27.93
17
17
2002 Random Number Generator   97 42.09
14543 Range Sum   26 955 38.31
11
12
10611 Ranges   2 168 19.44
9
9
6264 Rank of a Fraction   4 129 31.58
12
34
1526 Ranklist Sorting   1 23 12.75
17
34
16180 Ratar   77 26.55
17
17
7389 Rating Hazard   21 21.10
9386 Re-Arrange II   9 269 44.27
21
17
13913 Real Mangoes for Ranjith   7 1929 41.96
3
8
16267 Real Numbers   2 169 17.82
26
26
18174 REAL ROOTS   15 1261 60.57
6
12
6985 Rearranging Digits   54 26.02
2058 Reaux! Sham! Beaux!   4 659 32.87
23
6
3934 Recaman’s Sequence   25 3526 53.89
9
6
8423 Recover Polynomials   51 48.25
2038 Rectangle Tiling   2 112 41.27
1
1
188 Rectangles   2 181 12.80
17
23
1960 Rectangles   3 163 16.39
34
28
4300 Rectangles   174 26597 49.91
5
8
3890 Rectangles Counting   173 33.28
8285 Rectangles in a Matrix   2 7 23.21
17
34
3878 Rectangles Perimeter   58 2689 49.84
12
14
2056 Rectangular Polygon   1 133 48.07
1
17
5294 Recurrence   2 255 14.32
28
17
37422 Recurrence Power Sum   3 24 19.79
42
45
339 Recursive Sequence   75 3633 50.12
20
17
2699 Recursive Sequence (Version II)   16 987 26.25
26
24
37226 Recursive Sequence (Version III)   4 7 31.03
34
34
12807 Recursive Sequence (Version X)   7 17.31
11386 Recycled Numbers   1 194 31.61
12363 Red And Green   7 249 39.68
8
14
8317 Red Balls   43 44.84
25001 Red Blue Line Segments   2 239 17.17
28
26
11712 Red Cross Hospital   1 18 24.77
34
1
21525 Red John is Back   5 315 53.58
6
17
36226 Reduce the array   14 644 28.99
5
6
8056 Regex Edit Distance   2 32 40.62
34
42
10113 Regular Convex Polygon   95 29.50
7866 Regular expressions (Hard)   1 96 25.05
28
23

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