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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
1841 Prime Path   336 10366 57.91
19
18
7742 Onotole needs your help   138 10044 41.01
4
11
5449 Seinfeld   188 9506 40.07
8
11
206 Bitmap   245 9352 27.97
15
16
7733 Happy Numbers I   89 9337 53.37
8
8
10582 subarrays   215 9254 34.29
11
13
7406 Beehive Numbers   38 9171 58.88
5
9
328 Bishops   82 8914 31.99
14
7
9861 Hotels Along the Croatian Coast   210 8850 41.57
10
12
97 Party Schedule   250 8807 36.13
14
16
4560 The Double HeLiX   147 8781 37.59
11
10
345 Mixtures   254 8735 36.45
17
21
27 Sorting Bank Accounts   53 8707 40.47
11
6
31 Fast Multiplication   48 8638 20.65
15
12
740 Treats for the Cows   260 8476 42.60
13
14
2178 He is offside!   5 8350 50.10
3
4
11515 I AM VERY BUSY   151 8295 45.18
9
11
1028 Hubulullu   60 8198 58.77
2
15
39 Piggy-Bank   139 8078 35.45
14
16
1805 Largest Rectangle in a Histogram   222 8059 27.60
18
24
8670 THE MAX LINES   29 8006 36.84
4
10
78 Marbles   67 7869 34.95
15
13
12471 DIE HARD   157 7850 39.09
12
14
4580 ABCDEF   216 7776 29.20
14
16
8061 Christmas Play   57 7722 48.24
6
4
12323 Minimum Knight moves !!!   129 7700 42.26
15
11
8612 Penney Game   39 7627 67.56
4
3
15 The Shortest Path   156 7468 24.12
17
12
4452 Simple Arithmetics II   55 7444 42.38
11
5
5699 The last digit re-visited   39 7438 31.67
9
9
9921 ABC Path   159 7374 21.78
15
12
14932 Lowest Common Ancestor   230 7344 29.13
15
15
6470 Finding the Kth Prime   48 7159 27.27
19
14
9788 Friends of Friends   66 7106 63.23
7
5
6471 Printing some primes   68 6926 28.57
13
12
15965 PLAY WITH MATH   60 6827 46.44
4
5
4033 Phone List   150 6823 31.36
16
14
2906 GCD2   60 6788 36.48
12
11
7718 Number of common divisors   85 6767 25.03
11
13
8001 Fibonacci Sum   177 6763 27.70
19
19
8869 Roti Prata   60 6734 39.83
16
18
12150 Just Next !!!   74 6516 23.11
12
11
7169 Pizza   46 6413 29.96
10
8
3693 Maximum Sum   57 6379 42.07
19
18
2716 Maximal Quadrilateral Area   -1 6220 50.29
3
8
9494 Just Add It   76 6210 47.91
11
10
1688 A Very Easy Problem!   40 6162 49.24
12
11
10286 DOTA HEROES   44 6025 45.00
3
5
21357 Crucial Equation   79 6010 38.17
4
9
91 Two squares or not two squares   79 5998 24.55
11
14

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