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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
2661 Illumination   6 3.40
904 Image Perimeters   3 331 59.24
17
17
1963 Image Projections   104 32.61
8849 Imitation   22 36.00
7426 Imperial Units   3 500 45.43
3
12
9644 Imperialism   5 172 30.50
8
14
16210 Impossible Boss   10 178 21.54
21
22
34886 Impress zing   6 91 22.50
26
22
19991 In case of failure   3 119 40.11
34
34
1786 In Danger   49 4367 53.60
7
13
34370 Incomplete hierarchy   18 10.55
1
17
27321 Increasing numbers   17 552 23.69
13
19
6221 Increasing Powers of K   4 352 27.41
24
34
21187 Increasing Shortest Path   2 30 18.78
26
34
598 Increasing Subsequences   142 34.21
34
34
2815 Increasing Subsequences   53 2152 28.11
15
22
2421 Incrementing The Integer   1 50 23.55
17
50
901 Index Generation   38 53.66
17
1
13815 India in Box   21 14.16
9119 Indiana Jones and the lost Soccer Cup   8 376 29.00
11
13
7109 Indicator of progression   2 324 23.87
17
17
9760 Indomie   3 108 47.02
26
26
25476 Induced favoritism   1 40 28.87
17
34
19150 Infinite Sequence   1 152 31.88
1
34
7763 Ingenious Metro   66 67.09
18187 Ingredients   10 273 32.43
21
23
27683 Inquire   12 752 54.59
6
4
28463 Insect invasion   1 16 7.99
34
34
9722 Insertion Sort   28 3876 30.86
12
12
1881 Instruction Decoder   2 664 50.71
17
17
4942 Integer Factorization (15 digits)   45 3452 32.33
11
11
4941 Integer Factorization (20 digits)   8 561 55.71
34
30
4948 Integer Factorization (29 digits)   8 102 15.52
40
34
7192 Integral Maximization   1 370 38.13
50
50
20848 Interesting Game   58 45.09
21418 Interesting Game with Polygons   1 33 27.75
17
34
279 Interesting number   26 820 24.08
19
24
20845 Interesting Numbers   4 218 24.02
13
5
20849 Interesting queries   2 44 36.32
34
34
20846 Interesting Selection   5 123 43.21
13
26
20654 Interesting Subset   5 95 23.50
11
14
11952 Intergalactic Highways   3 136 28.32
17
17
962 Intergalactic Map   2 564 23.41
19
28
2153 Internet is Faulty   64 41.34
40945 Internet Spamming   4 20 29.17
17
17
22331 Intersection Query   1 13 17.21
50
34
5298 Interval Challenge   4 135 16.52
24
27
116 Intervals   5 962 22.83
21
24
25480 Invading aliens   15 17.91
2731 Inventing Test Data   4 455 25.96
15
28

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