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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
1841 Prime Path   336 10340 57.90
19
18
7742 Onotole needs your help   138 10037 41.00
4
11
5449 Seinfeld   188 9501 40.06
8
11
7733 Happy Numbers I   89 9331 53.37
8
8
206 Bitmap   245 9306 27.93
15
16
10582 subarrays   215 9234 34.30
11
13
7406 Beehive Numbers   38 9164 58.87
5
9
328 Bishops   82 8906 32.03
14
7
9861 Hotels Along the Croatian Coast   210 8835 41.59
10
12
97 Party Schedule   250 8790 36.12
14
16
4560 The Double HeLiX   146 8770 37.57
12
10
345 Mixtures   254 8710 36.48
17
21
27 Sorting Bank Accounts   53 8676 40.50
11
6
31 Fast Multiplication   48 8604 20.63
15
12
740 Treats for the Cows   260 8463 42.60
13
14
2178 He is offside!   5 8343 50.12
3
4
11515 I AM VERY BUSY   151 8257 45.25
9
11
1028 Hubulullu   60 8194 58.76
2
15
39 Piggy-Bank   139 8063 35.44
14
16
1805 Largest Rectangle in a Histogram   222 8030 27.57
18
24
8670 THE MAX LINES   29 8006 36.84
4
10
78 Marbles   67 7862 34.96
15
13
12471 DIE HARD   156 7842 39.09
11
14
4580 ABCDEF   216 7772 29.20
14
16
8061 Christmas Play   57 7718 48.23
6
4
12323 Minimum Knight moves !!!   128 7642 42.23
15
11
8612 Penney Game   39 7622 67.55
4
3
15 The Shortest Path   156 7453 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 7299 29.17
15
15
6470 Finding the Kth Prime   48 7109 27.23
19
14
9788 Friends of Friends   66 7105 63.23
7
5
6471 Printing some primes   68 6855 28.59
13
12
15965 PLAY WITH MATH   60 6820 46.48
4
5
4033 Phone List   149 6787 31.33
16
14
2906 GCD2   60 6784 36.48
12
11
8001 Fibonacci Sum   177 6751 27.70
19
19
7718 Number of common divisors   85 6726 25.03
11
13
8869 Roti Prata   60 6684 39.86
16
18
12150 Just Next !!!   74 6504 23.10
12
11
7169 Pizza   46 6413 29.97
10
8
3693 Maximum Sum   57 6355 42.02
19
18
2716 Maximal Quadrilateral Area   -1 6215 50.28
3
8
9494 Just Add It   75 6195 47.93
11
10
1688 A Very Easy Problem!   40 6161 49.23
12
11
10286 DOTA HEROES   43 6020 45.00
3
5
91 Two squares or not two squares   79 5996 24.55
11
14
21357 Crucial Equation   79 5994 38.14
4
9

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