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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
11515 I AM VERY BUSY   151 8295 45.18
9
11
4033 Phone List   150 6823 31.36
16
14
370 Ones and zeros   149 4443 30.01
19
22
4560 The Double HeLiX   147 8781 37.59
11
10
4141 Euler Totient Function   144 11441 38.44
8
11
39 Piggy-Bank   139 8078 35.45
14
16
7742 Onotole needs your help   138 10044 41.01
4
11
12323 Minimum Knight moves !!!   129 7700 42.26
15
11
1435 Vertex Cover   128 4022 34.09
15
18
3410 Feynman   120 33889 57.53
4
6
7299 Multiples of 3   120 3674 23.37
20
17
9948 Will it ever stop   119 17709 43.10
4
9
1419 A Game with Numbers   118 11955 61.61
3
10
913 Query on a tree II   117 4382 20.71
24
21
1710 Two Ends   115 3756 41.99
18
17
1684 Frequent values   111 3769 27.68
20
21
1030 Triple Fat Ladies   106 19014 51.74
4
12
2157 Anti-Blot System   104 12914 45.24
10
5
14956 Submerging Islands   104 4414 39.62
13
13
42 Adding Reversed Numbers   103 76035 48.40
6
4
7676 Sum of Digits   103 4755 38.56
17
20
7259 Light Switching   102 4287 32.86
16
15
25 Pouring water   100 5344 24.13
19
22
1845 Mice and Maze   99 5376 36.02
10
10
64 Permutations   98 4271 51.95
12
20
181 Scuba diver   98 3786 25.94
18
18
368 Cobbled streets   98 5375 50.76
13
12
38 Labyrinth   97 5286 25.76
17
16
2123 Candy I   96 28447 44.21
4
5
9655 Elevator Trouble   95 4157 32.23
11
11
2416 Distinct Subsequences   94 3689 36.21
12
22
2905 Not a Triangle   93 4978 38.64
11
11
63 Square Brackets   92 3838 56.87
14
18
3885 Coins Game   92 5149 46.07
10
13
6818 Capital City   92 2704 38.94
19
20
9493 Advanced Fruits   92 2225 37.47
19
16
694 Distinct Substrings   91 5505 26.38
21
24
7424 Girls and Boys   91 12218 46.93
4
10
400 To and Fro   89 23237 55.52
14
7
3643 Traffic Network   89 2090 18.30
18
21
7733 Happy Numbers I   89 9337 53.37
8
8
130 Rent your airplane and make money   88 3338 28.60
18
17
2884 Martian Mining   87 2269 47.77
13
22
5295 Adjacent Bit Counts   86 3544 65.92
14
18
7975 Tri graphs   86 4834 29.09
11
10
10380 prayatna PR   86 5224 43.31
6
6
7718 Number of common divisors   85 6767 25.03
11
13
10401 Aliens at the train   85 4356 29.25
13
10
1112 Number Steps   84 33698 43.23
4
4
10232 Distinct Primes   83 5786 45.50
10
9

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