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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
42 Adding Reversed Numbers   103 84574 48.51
6
4
2157 Anti-Blot System   104 12954 45.23
10
5
7676 Sum of Digits   105 4946 38.70
17
20
1030 Triple Fat Ladies   106 19185 51.76
4
12
14956 Submerging Islands   107 4661 39.67
13
14
1684 Frequent values   112 3944 27.62
20
21
1710 Two Ends   115 3782 41.58
18
17
913 Query on a tree II   117 4678 20.85
23
21
1419 A Game with Numbers   118 12069 61.53
3
10
9948 Will it ever stop   120 17918 42.99
4
9
7299 Multiples of 3   121 3755 23.55
20
17
3410 Feynman   122 34455 57.48
4
6
1435 Vertex Cover   129 4133 34.30
15
18
12323 Minimum Knight moves !!!   132 8467 42.55
15
11
7742 Onotole needs your help   138 10137 41.08
4
11
39 Piggy-Bank   140 8208 35.47
14
16
4141 Euler Totient Function   147 11913 38.87
8
11
4560 The Double HeLiX   147 8930 37.56
11
10
4033 Phone List   151 7201 31.67
16
14
11515 I AM VERY BUSY   151 8562 45.11
9
11
370 Ones and zeros   152 4497 30.04
19
21
24 Small factorials   154 51086 29.61
15
9
302 Count on Cantor   155 13062 61.24
13
14
15 The Shortest Path   157 7656 24.04
17
12
12471 DIE HARD   157 7961 38.79
12
13
3273 Order statistic set   160 3350 26.49
22
20
9921 ABC Path   162 7776 21.82
15
12
54 Julka   163 23348 27.51
19
6
375 Query on a tree   165 5792 17.54
33
27
16487 Update the array !   165 4991 38.70
9
14
11814 Eko   172 16344 26.85
14
14
11 Factorial   175 60157 45.06
6
12
4300 Rectangles   176 26994 49.75
5
8
61 Brackets   177 5499 24.42
19
20
8001 Fibonacci Sum   182 6939 27.85
19
19
5449 Seinfeld   189 9549 40.05
8
11
3442 The last digit   190 29927 26.94
9
8
32 A Needle in the Haystack   193 11268 38.32
15
14
9861 Hotels Along the Croatian Coast   211 9014 41.75
10
12
10582 subarrays   215 9506 34.32
11
13
4580 ABCDEF   218 7889 29.29
14
16
1805 Largest Rectangle in a Histogram   229 8633 28.26
18
23
14932 Lowest Common Ancestor   234 7792 29.18
15
15
1716 Can you answer these queries III   236 11841 43.59
22
21
3946 K-th Number   243 5649 35.14
25
27
423 Assignments   244 4789 33.59
18
22
206 Bitmap   246 9594 28.22
15
16
3266 K-query   248 5915 25.21
21
25
97 Party Schedule   251 8917 36.20
14
16
345 Mixtures   256 9079 36.24
17
21

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