list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
42 Adding Reversed Numbers   103 86612 48.67
6
4
2157 Anti-Blot System   104 12957 45.23
10
5
7676 Sum of Digits   105 4962 38.72
17
20
1030 Triple Fat Ladies   106 19192 51.77
4
12
14956 Submerging Islands   107 4679 39.68
13
14
1684 Frequent values   112 3949 27.61
20
21
1710 Two Ends   115 3783 41.57
18
17
913 Query on a tree II   118 4700 20.88
23
21
1419 A Game with Numbers   118 12070 61.52
3
10
9948 Will it ever stop   120 17921 42.99
4
9
7299 Multiples of 3   121 3759 23.56
20
17
3410 Feynman   122 34472 57.47
4
6
1435 Vertex Cover   129 4138 34.31
15
18
12323 Minimum Knight moves !!!   132 8564 42.52
15
11
7742 Onotole needs your help   138 10137 41.08
4
11
39 Piggy-Bank   140 8220 35.49
14
16
4141 Euler Totient Function   147 11939 38.90
8
11
4560 The Double HeLiX   147 8946 37.56
11
10
4033 Phone List   151 7236 31.73
16
14
11515 I AM VERY BUSY   151 8582 45.09
9
11
370 Ones and zeros   152 4502 30.05
19
21
24 Small factorials   154 51153 29.62
15
9
302 Count on Cantor   155 13067 61.24
13
14
15 The Shortest Path   157 7673 24.06
17
12
12471 DIE HARD   157 7970 38.74
12
13
3273 Order statistic set   160 3378 26.55
22
20
9921 ABC Path   162 7806 21.84
15
12
54 Julka   163 23374 27.52
19
6
16487 Update the array !   165 4998 38.71
9
14
375 Query on a tree   166 5816 17.57
33
27
11814 Eko   172 16460 26.87
14
14
11 Factorial   175 60262 45.08
6
12
4300 Rectangles   176 27009 49.76
5
8
61 Brackets   178 5513 24.41
19
20
8001 Fibonacci Sum   182 6954 27.88
19
19
5449 Seinfeld   189 9554 40.05
8
11
3442 The last digit   190 29976 26.95
9
8
32 A Needle in the Haystack   193 11299 38.33
15
14
9861 Hotels Along the Croatian Coast   211 9025 41.77
10
12
10582 subarrays   215 9521 34.33
11
13
4580 ABCDEF   218 7897 29.30
14
16
1805 Largest Rectangle in a Histogram   229 8653 28.30
18
23
14932 Lowest Common Ancestor   234 7824 29.19
15
15
1716 Can you answer these queries III   236 11887 43.61
22
21
3946 K-th Number   243 5692 35.19
25
27
423 Assignments   244 4801 33.61
18
22
206 Bitmap   246 9609 28.24
15
16
3266 K-query   248 5954 25.28
21
25
97 Party Schedule   251 8927 36.22
14
16
345 Mixtures   256 9112 36.24
17
21

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