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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
5542 Counting pairs   4 129 26.33
39
36
5566 Math with Bases   14 10.82
5609 Knight Moves   6 98 40.36
9
20
5637 LL and ErBao   4 58.70
5638 Mobile Service Hard   1 79 22.39
50
50
5640 Fractions on Tree   6 918 61.77
14
21
5649 Divide Polygon   3 31 21.43
9
34
5652 Snow White and the N dwarfs   31 821 21.10
21
31
5672 Captain Selection   2 18.18
5673 Fractions on Tree ( reloaded !)   2 244 38.22
26
34
5699 The last digit re-visited   39 7436 31.67
9
9
5703 Primes of Lambda   1 22 29.14
34
34
5725 123 Sequence   2 120 23.56
1
1
5732 Paradox   42 1218 27.87
16
19
5830 Alternating Permutations   1 54 39.39
34
34
5831 Permutation Jumping   135 58.71
5832 AND Rounds   51 1688 24.83
17
20
5833 XOR Rounds   2 353 30.58
9
13
5885 Troops of Sand Monsters   2 107 17.52
17
17
5902 Tri   1 78 20.64
34
50
5911 Square-free Integers Factorization   1 20 39.51
17
34
5917 Factorial length   11 3462 34.54
5
17
5969 Finding Maximum   2 103 30.65
12
17
5970 Finding Primes   22 1326 27.86
16
15
5971 LCM Sum   80 3510 25.72
20
29
5972 Maximum Sum Sequences   14 1140 20.64
15
18
5973 Selecting Teams   222 22.69
5975 Travelling Knight   2 50 33.40
34
34
5976 Traversing Grid   30 3704 58.49
6
10
5977 Weird Function   33 1134 18.84
18
16
5978 Frequent Prime Ranges   9 688 29.16
13
13
5979 Yet Another Permutations Problem   5 1351 49.49
7
15
5980 Matrix Game   14 942 29.33
8
20
6035 Dinner   4 155 27.03
9
34
6041 Mountain Walking   3 474 42.47
9
1
6042 Another Box Problem   10 830 49.87
6
17
6043 The Game   13 930 39.59
3
19
6044 Minimum Diameter Circle   1 432 27.29
34
42
6052 PBCGAME   81 27.35
6059 Another GCD problem   331 45.56
6072 Chocolate   153 21.22
17
34
6168 Building Bridges   27 1637 26.01
11
17
6169 Standing Sequence   2 118 28.49
34
39
6170 Homecoming   17 23.00
6171 Majority   35 5307 43.13
6
7
6172 OAE   6 1149 41.70
11
27
6187 Jane and Tarzan   6 212 24.48
17
26
6219 Edit distance   306 13063 33.17
12
18
6221 Increasing Powers of K   4 350 27.39
24
34
6230 Dictionary order   5 10.64

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