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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
391 Railroads   85 17.48
17
17
15574 Railway   2 17 26.77
34
34
2127 Rain   3 433 40.34
17
14
4458 Rainbow   1 34 19.46
17
34
3724 Rainbow Ride   8 484 35.97
19
19
6906 Raining Parabolas   2 253 21.44
26
26
22177 RajaRani   3 3 4.35
17
17
18149 Rama and Friends   10 989 28.52
14
12
36937 Random Magic Trick   3 14 40.00
34
34
36142 Random modulo n   16 74 57.98
8
15
407 Random Number   44 28.25
17
17
2002 Random Number Generator   97 42.09
14543 Range Sum   26 973 38.01
11
12
10611 Ranges   2 169 19.44
9
9
6264 Rank of a Fraction   4 129 31.58
12
34
1526 Ranklist Sorting   1 23 12.09
17
34
16180 Ratar   79 26.89
17
17
7389 Rating Hazard   21 21.10
9386 Re-Arrange II   9 270 44.49
21
17
13913 Real Mangoes for Ranjith   7 1931 41.87
3
8
16267 Real Numbers   2 171 17.91
26
26
18174 REAL ROOTS   15 1264 60.40
6
12
6985 Rearranging Digits   54 26.02
2058 Reaux! Sham! Beaux!   4 660 32.89
23
6
3934 Recaman’s Sequence   25 3529 53.85
9
6
8423 Recover Polynomials   51 48.25
2038 Rectangle Tiling   2 112 40.75
1
1
188 Rectangles   2 182 12.71
17
23
1960 Rectangles   4 164 16.40
34
28
4300 Rectangles   175 26751 49.92
5
8
3890 Rectangles Counting   174 33.39
8285 Rectangles in a Matrix   2 7 23.21
17
34
3878 Rectangles Perimeter   58 2690 49.81
12
14
2056 Rectangular Polygon   1 134 47.94
1
17
5294 Recurrence   2 255 14.32
28
17
37422 Recurrence Power Sum   3 25 19.55
42
45
339 Recursive Sequence   75 3679 50.25
20
17
2699 Recursive Sequence (Version II)   16 999 26.28
26
24
37226 Recursive Sequence (Version III)   4 8 33.33
34
34
12807 Recursive Sequence (Version X)   8 15.15
11386 Recycled Numbers   1 194 31.61
12363 Red And Green   7 249 39.68
8
14
8317 Red Balls   43 44.25
25001 Red Blue Line Segments   2 260 17.81
28
26
11712 Red Cross Hospital   1 18 24.10
34
1
21525 Red John is Back   5 315 53.58
6
17
36226 Reduce the array   15 679 29.09
4
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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