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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
6264 Rank of a Fraction   4 129 31.58
12
34
10611 Ranges   2 169 19.44
9
9
14543 Range Sum   26 973 38.01
11
12
2002 Random Number Generator   97 42.09
407 Random Number   44 28.25
17
17
36142 Random modulo n   16 74 57.98
8
15
36937 Random Magic Trick   3 14 40.00
34
34
18149 Rama and Friends   10 989 28.52
14
12
22177 RajaRani   3 3 4.35
17
17
6906 Raining Parabolas   2 253 21.44
26
26
3724 Rainbow Ride   8 484 35.97
19
19
4458 Rainbow   1 34 19.46
17
34
2127 Rain   3 433 40.34
17
14
15574 Railway   2 17 26.77
34
34
391 Railroads   85 17.48
17
17
13807 Rage Drug   3 30 33.08
17
21
18666 Radiation   1 31 18.65
13399 Rachu   8 1044 33.66
8
10
3261 Race Against Time   37 1088 24.58
21
21
10738 Ra-One Numbers   35 1562 33.80
18
22
11050 R Numbers   15 255 55.72
29
33
27339 Queue of Soldiers   12 45.95
30351 Quest Hunter   10 18.18
5301 Query Problem   7 675 37.32
16
22
16580 Query on a tree VII   1 259 17.55
34
34
16549 Query on a tree VI   10 509 19.31
36
26
2939 Query on a tree V   75 1779 28.02
29
30
2666 Query on a tree IV   5 688 13.66
38
34
1487 Query on a tree III   548 17.57
913 Query on a tree II   117 4486 20.70
23
21
375 Query on a tree   164 5635 17.55
33
27
9694 Quelling Blade   5 33.33
1706 Queens, Knights and Pawns   4 842 33.13
17
9
9725 Queens on a Board   2 51 50.00
34
34
11899 Queen Game   1 20 35.29
34
17
18188 Queen and Stable Relationships   17 34.55
4311 Quasi-template   54 33.92
10437 Quadrilaterals   73 30.28
8398 Quadratic Equation   1 600 28.86
34
17
14542 Pythagorean triples (medium)   2 131 18.41
9
26
22784 Pythagorean Triple Counting   4 31 54.49
30
17
318 Pythagorean Legacy   29 23.04
1
34
23 Pyramids   -20 5639 36.91
9
15
14928 Pyramidal Constructions   -1 334 49.90
28
23
9138 Pyramid Sums 2   2 106 33.85
23
34
9137 Pyramid Sums   92 34.78
34
17
2132 Puzzle   85 32.11
17128 Putnik   2 94 48.99
9
17
2662 Put a Point in a Hyperspace   17 11.06
9255 Publication   3 38 61.63
23
17

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