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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
91 Two squares or not two squares   79 6096 24.70
11
14
13043 The Mirror of Galadriel   33 5980 64.50
2
3
247 Chocolate   74 5964 43.30
10
18
10232 Distinct Primes   85 5932 45.48
10
9
375 Query on a tree   167 5894 17.61
33
27
9734 Hacking the random number generator   62 5882 39.02
8
6
3946 K-th Number   244 5831 35.41
25
27
10239 Between the Mountains   36 5822 39.21
7
7
694 Distinct Substrings   92 5782 26.62
21
24
23 Pyramids   -19 5734 36.68
9
15
10394 Buying Apples!   73 5616 34.86
12
14
25 Pouring water   100 5581 24.42
19
22
1845 Mice and Maze   100 5569 35.93
10
10
61 Brackets   178 5548 24.47
19
20
1163 Java vs C ++   17 5524 22.88
14
5
7588 Wise And Miser   70 5522 67.30
8
10
3885 Coins Game   92 5497 45.27
10
13
1026 Favorite Dice   42 5492 63.85
4
21
288 Prime or Not   73 5477 19.32
21
22
5117 Wine trading in Gergovia   76 5443 33.77
9
12
368 Cobbled streets   98 5441 50.87
13
12
8785 Cut the Silver Bar   52 5382 54.42
5
16
38 Labyrinth   98 5361 25.82
18
16
6171 Majority   35 5349 43.19
6
7
10380 prayatna PR   86 5303 43.08
6
6
16420 Even Numbers   40 5279 48.05
6
5
7804 Defense of a Kingdom   41 5231 25.17
10
12
1296 4 values whose sum is 0   64 5121 24.92
18
14
10565 Alice Sieve   31 5079 53.39
2
7
21524 Pattern Find   81 5057 38.70
10
13
2905 Not a Triangle   93 5052 38.67
11
11
7676 Sum of Digits   106 5035 38.79
17
20
16487 Update the array !   165 5026 38.77
9
14
7975 Tri graphs   87 4871 29.13
11
10
423 Assignments   244 4838 33.69
18
22
913 Query on a tree II   118 4785 20.96
23
21
14956 Submerging Islands   107 4721 39.69
13
14
18155 abs(a-b) I   61 4700 47.91
5
9
7259 Light Switching   102 4696 34.33
16
15
2738 Number Guessing Game   42 4631 62.52
8
13
370 Ones and zeros   152 4522 30.11
19
21
8 Complete the Sequence!   32 4520 36.74
16
18
3381 Highways   77 4517 38.26
10
9
10401 Aliens at the train   85 4481 29.28
13
10
64 Permutations   98 4413 52.19
12
20
8319 GLJIVE   -85 4406 35.24
2
5
1786 In Danger   49 4395 53.61
7
13
2713 Can you answer these queries IV   60 4382 17.74
21
21
9655 Elevator Trouble   96 4334 32.39
11
11
3749 Subset Sums   74 4224 26.66
17
20

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