list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
1841 Prime Path   338 10568 57.96
19
18
7742 Onotole needs your help   138 10139 41.08
4
11
206 Bitmap   246 9621 28.25
15
16
5449 Seinfeld   189 9554 40.05
8
11
10582 subarrays   215 9534 34.35
11
13
7733 Happy Numbers I   89 9397 53.35
8
8
7406 Beehive Numbers   38 9209 58.89
5
9
345 Mixtures   256 9140 36.23
17
21
9861 Hotels Along the Croatian Coast   211 9032 41.76
10
12
31 Fast Multiplication   49 9018 20.73
15
12
328 Bishops   83 8983 32.03
14
7
4560 The Double HeLiX   147 8953 37.57
11
10
27 Sorting Bank Accounts   53 8951 40.33
11
6
97 Party Schedule   251 8936 36.23
14
16
1805 Largest Rectangle in a Histogram   229 8663 28.31
18
23
12323 Minimum Knight moves !!!   132 8602 42.56
15
11
740 Treats for the Cows   261 8598 42.69
13
14
11515 I AM VERY BUSY   151 8594 45.10
9
11
2178 He is offside!   5 8431 50.13
3
4
1028 Hubulullu   61 8254 58.72
2
15
39 Piggy-Bank   140 8224 35.49
14
16
78 Marbles   68 8171 34.97
15
13
8670 THE MAX LINES   29 8042 36.88
4
10
12471 DIE HARD   157 7974 38.73
12
13
4580 ABCDEF   218 7907 29.33
14
16
14932 Lowest Common Ancestor   234 7861 29.21
15
15
9921 ABC Path   162 7825 21.85
15
12
6470 Finding the Kth Prime   48 7822 27.21
19
14
8061 Christmas Play   57 7783 48.26
6
4
8612 Penney Game   38 7737 67.21
4
3
6471 Printing some primes   71 7720 28.86
13
11
15 The Shortest Path   158 7687 24.06
17
12
4452 Simple Arithmetics II   55 7511 42.28
11
5
5699 The last digit re-visited   39 7458 31.71
9
9
8869 Roti Prata   63 7378 39.50
15
17
4033 Phone List   151 7284 31.80
16
14
7718 Number of common divisors   87 7248 24.41
11
13
9788 Friends of Friends   67 7146 63.26
7
5
8001 Fibonacci Sum   182 6965 27.89
19
19
15965 PLAY WITH MATH   60 6896 46.48
4
5
2906 GCD2   60 6855 36.49
12
11
12150 Just Next !!!   75 6649 23.09
12
11
3693 Maximum Sum   59 6587 42.40
19
18
7169 Pizza   45 6435 29.98
10
8
9494 Just Add It   76 6434 46.83
11
10
21357 Crucial Equation   80 6362 38.01
4
9
2716 Maximal Quadrilateral Area   -1 6253 50.22
3
8
1688 A Very Easy Problem!   40 6169 49.18
12
11
10286 DOTA HEROES   44 6093 44.90
3
5
91 Two squares or not two squares   79 6089 24.68
11
14

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