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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
394 Alphacode   577 22319 27.29
15
15
8759 Alpine Skiing   1 52 38.85
5830 Alternating Permutations   1 57 38.46
34
34
27307 Alternating Sequences   62 2095 32.45
8
9
17267 Alturas de NoMeAcuerdo   2 74 62.30
17
14
25471 AM FM   2 37 11.87
17
34
4188 Amazing equality   38 13.58
14138 Amazing Factor Sequence   38 2331 37.11
11
12
33039 Amazing Factor Sequence (hard)   2 17 62.60
50
50
14168 Amazing Factor Sequence (medium)   9 201 28.99
21
24
11472 Amazing Maze   5 261 29.01
17
26
13753 Amazing Prime Sequence   61 3319 29.82
11
12
19975 Amazing Prime Sequence (hard)   5 83 42.49
39
45
2171 Ambiguous Codes   1 80 38.22
379 Ambiguous Permutations   71 12329 59.57
4
5
1673 Ambitious Manager   5 462 36.55
21
17
40667 Ambitious XOXO   5 36 48.84
11
14
10450 Amoeba   98 17.32
13096 Amr Samir   5 916 31.08
9
10
11354 Amusing numbers   53 3242 59.85
13
15
11932 Amz Rock   13 1762 61.93
4
7
11931 AMZ Word   12 1698 64.69
9
10
26646 An easy Problem   8 64 54.74
13
21
13768 An Experiment by Penny   7 603 59.67
8
14
16243 Anagrams   2 259 25.32
17
12
41890 Anagrams and Divisibility   5 6.14
41834 Anagrams and GCD   10 9.17
15088 Ancient Aliens   5 52.00
34
1
8478 Ancient Pocket Calculator   7 4.44
36941 AND Queries   4 12 25.74
23
34
5832 AND Rounds   51 1693 24.82
17
20
1022 Angels and Devils   6 668 31.09
26
25
32857 Angry Siam   4 56 34.01
30
30
18915 Anils Proposal   2 26 18.54
50
50
15312 Annoying Coins Quest   1 30 42.32
17
34
14049 Annual Day   1 88 19.50
12
12
684 Another Assignment Problem   1 103 12.40
34
1
6042 Another Box Problem   10 833 49.88
6
17
1991 Another Continuous Fractions Problem   1 82 19.89
34
17
738 Another Counting Problem   1 225 40.41
1
1
6285 Another Game With Numbers   32 1236 30.52
11
13
6059 Another GCD problem   331 45.61
12958 Another Gift Problem   35 18.33
3466 Another Longest Common Subsequence Problem   6 42.86
2371 Another Longest Increasing Subsequence Problem   16 797 13.46
29
33
4212 Another Longest Increasing Subsequence Problem   11 48.15
4194 Another Lucky Numbers   4 137 33.50
17
13
1671 Another Mathematical Problem   61 11.37
1715 Another Necklace Problem   50 19.00
2565 Another Permutation Problem   1 56 24.15
34
17

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