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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
370 Ones and zeros   151 4475 30.01
19
21
4033 Phone List   151 7090 31.60
16
14
11515 I AM VERY BUSY   151 8458 45.20
9
11
4560 The Double HeLiX   147 8879 37.57
11
10
4141 Euler Totient Function   145 11753 38.72
8
11
39 Piggy-Bank   140 8150 35.44
14
16
7742 Onotole needs your help   138 10108 41.04
4
11
12323 Minimum Knight moves !!!   132 8197 42.38
15
11
1435 Vertex Cover   129 4093 34.19
15
18
3410 Feynman   122 34256 57.52
4
6
7299 Multiples of 3   121 3717 23.48
20
17
9948 Will it ever stop   119 17855 43.00
4
9
1419 A Game with Numbers   118 12042 61.54
3
10
913 Query on a tree II   117 4547 20.70
23
21
1710 Two Ends   115 3771 41.72
18
17
1684 Frequent values   111 3895 27.67
20
21
1030 Triple Fat Ladies   106 19135 51.76
4
12
14956 Submerging Islands   106 4563 39.69
13
13
7676 Sum of Digits   105 4869 38.54
17
20
2157 Anti-Blot System   104 12941 45.22
10
5
42 Adding Reversed Numbers   103 80011 48.24
6
4
7259 Light Switching   102 4513 33.65
16
15
25 Pouring water   100 5459 24.27
19
22
1845 Mice and Maze   100 5463 36.07
10
10
181 Scuba diver   99 3826 25.97
18
18
38 Labyrinth   98 5318 25.77
18
16
64 Permutations   98 4340 52.00
12
20
368 Cobbled streets   98 5409 50.85
13
12
2123 Candy I   98 28750 44.25
4
5
9655 Elevator Trouble   96 4228 32.29
11
11
2416 Distinct Subsequences   94 3729 36.29
12
22
2905 Not a Triangle   93 5023 38.69
11
11
6818 Capital City   93 2817 39.15
20
20
63 Square Brackets   92 3855 56.72
14
18
3885 Coins Game   92 5318 45.55
10
13
9493 Advanced Fruits   92 2242 37.48
19
16
694 Distinct Substrings   91 5655 26.50
21
24
7424 Girls and Boys   91 12295 46.93
4
10
400 To and Fro   90 23351 55.55
14
7
3643 Traffic Network   89 2106 18.26
18
21
7733 Happy Numbers I   89 9374 53.37
8
8
130 Rent your airplane and make money   88 3354 28.60
18
17
2884 Martian Mining   87 2301 47.77
13
22
7975 Tri graphs   87 4843 29.10
11
10
5295 Adjacent Bit Counts   86 3655 64.70
14
18
7718 Number of common divisors   86 7033 24.77
12
13
10380 prayatna PR   86 5254 43.23
6
6
10232 Distinct Primes   85 5868 45.41
10
9
10401 Aliens at the train   85 4408 29.23
13
10
23776 K-Query Online   85 1957 40.10
20
23

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