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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
394 Alphacode   575 21942 27.19
15
15
8759 Alpine Skiing   1 51 38.46
5830 Alternating Permutations   1 54 39.39
34
34
27307 Alternating Sequences   62 2085 32.40
8
9
17267 Alturas de NoMeAcuerdo   2 70 62.07
17
14
25471 AM FM   2 36 12.53
17
34
4188 Amazing equality   38 13.58
14138 Amazing Factor Sequence   37 2314 37.02
11
11
33039 Amazing Factor Sequence (hard)   2 17 61.42
50
50
14168 Amazing Factor Sequence (medium)   8 198 28.91
21
23
11472 Amazing Maze   5 261 29.01
17
26
13753 Amazing Prime Sequence   61 3300 29.76
11
12
19975 Amazing Prime Sequence (hard)   4 79 41.80
34
42
2171 Ambiguous Codes   1 63 34.57
379 Ambiguous Permutations   70 12288 59.53
4
5
1673 Ambitious Manager   5 460 36.49
21
17
40667 Ambitious XOXO   5 33 47.31
11
14
10450 Amoeba   98 17.32
13096 Amr Samir   5 913 31.02
9
10
11354 Amusing numbers   52 3230 59.87
13
15
11932 Amz Rock   12 1746 62.10
4
7
11931 AMZ Word   12 1681 64.48
9
10
26646 An easy Problem   6 63 55.26
12
20
13768 An Experiment by Penny   7 603 59.67
8
14
16243 Anagrams   2 259 25.37
17
12
41890 Anagrams and Divisibility   5 6.42
41834 Anagrams and GCD   10 10.78
15088 Ancient Aliens   5 62.50
34
1
8478 Ancient Pocket Calculator   7 4.44
36941 AND Queries   3 8 11.94
17
34
5832 AND Rounds   51 1688 24.83
17
20
1022 Angels and Devils   6 665 31.13
28
26
32857 Angry Siam   3 54 33.76
28
28
18915 Anils Proposal   2 26 18.54
50
50
15312 Annoying Coins Quest   1 28 42.91
17
34
14049 Annual Day   1 88 19.50
12
12
684 Another Assignment Problem   1 103 12.41
34
1
6042 Another Box Problem   10 830 49.87
6
17
1991 Another Continuous Fractions Problem   1 82 19.89
34
17
738 Another Counting Problem   1 224 40.38
6285 Another Game With Numbers   31 1214 30.45
11
12
6059 Another GCD problem   331 45.56
12958 Another Gift Problem   35 18.33
3466 Another Longest Common Subsequence Problem   6 42.86
2371 Another Longest Increasing Subsequence Problem   15 763 13.22
29
33
4212 Another Longest Increasing Subsequence Problem   10 46.15
4194 Another Lucky Numbers   4 136 33.28
17
13
1671 Another Mathematical Problem   60 11.37
1715 Another Necklace Problem   50 19.00
2565 Another Permutation Problem   1 56 24.15
34
17

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