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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
1841 Prime Path   336 10337 57.89
19
18
7742 Onotole needs your help   138 10035 41.01
4
11
5449 Seinfeld   188 9499 40.06
8
11
7733 Happy Numbers I   89 9330 53.36
8
8
206 Bitmap   245 9302 27.92
15
16
10582 subarrays   215 9232 34.30
11
13
7406 Beehive Numbers   38 9163 58.86
5
9
328 Bishops   82 8906 32.03
14
7
9861 Hotels Along the Croatian Coast   210 8832 41.59
10
12
97 Party Schedule   250 8788 36.11
14
16
4560 The Double HeLiX   146 8770 37.57
12
10
345 Mixtures   254 8707 36.48
17
21
27 Sorting Bank Accounts   53 8674 40.50
11
6
31 Fast Multiplication   48 8599 20.63
15
12
740 Treats for the Cows   260 8462 42.60
13
14
2178 He is offside!   5 8343 50.12
3
4
11515 I AM VERY BUSY   151 8255 45.27
9
11
1028 Hubulullu   60 8194 58.76
2
15
39 Piggy-Bank   139 8061 35.45
14
16
1805 Largest Rectangle in a Histogram   221 8026 27.57
18
24
8670 THE MAX LINES   29 8006 36.84
4
10
78 Marbles   67 7861 34.95
15
13
12471 DIE HARD   156 7841 39.09
11
14
4580 ABCDEF   216 7769 29.20
14
16
8061 Christmas Play   57 7718 48.23
6
4
12323 Minimum Knight moves !!!   128 7638 42.22
15
11
8612 Penney Game   39 7622 67.55
4
3
15 The Shortest Path   156 7451 24.14
17
12
4452 Simple Arithmetics II   55 7442 42.37
11
5
5699 The last digit re-visited   39 7436 31.67
9
9
9921 ABC Path   158 7331 21.80
15
12
14932 Lowest Common Ancestor   230 7291 29.17
15
15
6470 Finding the Kth Prime   48 7105 27.22
19
14
9788 Friends of Friends   66 7105 63.23
7
5
6471 Printing some primes   68 6852 28.59
13
12
15965 PLAY WITH MATH   60 6820 46.48
4
5
2906 GCD2   60 6784 36.48
12
11
4033 Phone List   149 6784 31.31
16
14
8001 Fibonacci Sum   177 6750 27.69
19
19
7718 Number of common divisors   85 6726 25.03
11
13
8869 Roti Prata   60 6675 39.85
16
18
12150 Just Next !!!   74 6504 23.10
12
11
7169 Pizza   46 6413 29.97
10
8
3693 Maximum Sum   57 6351 42.05
19
18
2716 Maximal Quadrilateral Area   -1 6215 50.28
3
8
9494 Just Add It   75 6194 47.94
11
10
1688 A Very Easy Problem!   40 6161 49.23
12
11
10286 DOTA HEROES   43 6019 45.00
3
5
91 Two squares or not two squares   78 5994 24.54
11
14
21357 Crucial Equation   79 5994 38.14
4
9

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