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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
5541 Sequoiadendron   1 66 44.41
17
17
5542 Counting pairs   4 134 26.46
39
36
5566 Math with Bases   15 11.06
5609 Knight Moves   6 104 40.48
9
20
5637 LL and ErBao   5 41.43
5638 Mobile Service Hard   1 88 22.41
50
50
5640 Fractions on Tree   6 929 61.28
14
21
5649 Divide Polygon   3 40 21.61
9
34
5652 Snow White and the N dwarfs   32 1007 17.91
21
31
5672 Captain Selection   -1 10 28.57
5673 Fractions on Tree ( reloaded !)   2 247 38.26
26
34
5699 The last digit re-visited   39 7455 31.70
9
9
5703 Primes of Lambda   2 23 26.38
42
42
5725 123 Sequence   2 123 23.89
1
1
5732 Paradox   43 1239 27.86
16
19
5830 Alternating Permutations   1 60 37.76
34
34
5831 Permutation Jumping   136 59.33
5832 AND Rounds   51 1701 24.88
17
20
5833 XOR Rounds   2 359 30.85
9
13
5885 Troops of Sand Monsters   2 111 17.16
17
17
5902 Tri   1 79 20.33
34
50
5911 Square-free Integers Factorization   1 19 35.58
17
34
5917 Factorial length   11 3473 34.55
5
17
5969 Finding Maximum   3 108 30.17
13
23
5970 Finding Primes   22 1341 27.92
16
15
5971 LCM Sum   81 3878 26.19
20
29
5972 Maximum Sum Sequences   14 1154 20.61
15
18
5973 Selecting Teams   229 23.11
5975 Travelling Knight   2 52 32.40
34
34
5976 Traversing Grid   30 3718 58.55
6
10
5977 Weird Function   33 1154 18.96
18
16
5978 Frequent Prime Ranges   10 715 28.82
14
14
5979 Yet Another Permutations Problem   5 1358 49.52
7
15
5980 Matrix Game   14 965 28.97
8
20
6035 Dinner   4 161 27.31
9
34
6041 Mountain Walking   3 480 42.68
9
1
6042 Another Box Problem   10 847 50.00
6
17
6043 The Game   13 943 39.58
3
19
6044 Minimum Diameter Circle   1 446 27.76
34
42
6052 PBCGAME   84 27.71
6059 Another GCD problem   338 45.35
6072 Chocolate   158 21.45
17
34
6168 Building Bridges   27 1659 25.98
11
17
6169 Standing Sequence   2 120 28.38
34
39
6170 Homecoming   1 30 30.46
17
34
6171 Majority   35 5337 43.17
6
7
6172 OAE   7 1227 41.95
12
26
6187 Jane and Tarzan   7 217 24.50
15
22
6219 Edit distance   306 13222 33.15
12
18
6221 Increasing Powers of K   4 356 27.47
24
34

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