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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
10394 Buying Apples!   72 5368 34.91
12
14
368 Cobbled streets   98 5375 50.76
13
12
61 Brackets   174 5382 24.42
19
20
694 Distinct Substrings   91 5486 26.35
21
24
1163 Java vs C ++   17 5503 22.84
14
5
375 Query on a tree   163 5546 17.54
33
27
23 Pyramids   -20 5593 36.97
9
15
247 Chocolate   74 5697 44.35
10
18
9734 Hacking the random number generator   61 5726 38.83
8
6
10239 Between the Mountains   36 5772 39.10
7
7
10232 Distinct Primes   83 5775 45.49
10
9
13043 The Mirror of Galadriel   33 5904 64.49
2
3
21357 Crucial Equation   79 5995 38.15
4
9
91 Two squares or not two squares   79 5997 24.55
11
14
10286 DOTA HEROES   43 6024 44.99
3
5
1688 A Very Easy Problem!   40 6162 49.24
12
11
9494 Just Add It   76 6197 47.90
11
10
2716 Maximal Quadrilateral Area   -1 6216 50.28
3
8
3693 Maximum Sum   57 6356 42.02
19
18
7169 Pizza   46 6413 29.97
10
8
12150 Just Next !!!   74 6506 23.10
12
11
8869 Roti Prata   60 6691 39.86
16
18
7718 Number of common divisors   85 6726 25.03
11
13
8001 Fibonacci Sum   177 6755 27.70
19
19
2906 GCD2   60 6786 36.48
12
11
4033 Phone List   149 6791 31.33
16
14
15965 PLAY WITH MATH   60 6821 46.45
4
5
6471 Printing some primes   68 6863 28.59
13
12
9788 Friends of Friends   66 7106 63.23
7
5
6470 Finding the Kth Prime   48 7115 27.24
19
14
14932 Lowest Common Ancestor   230 7308 29.17
15
15
9921 ABC Path   158 7339 21.80
15
12
5699 The last digit re-visited   39 7437 31.67
9
9
4452 Simple Arithmetics II   55 7442 42.38
11
5
15 The Shortest Path   156 7456 24.12
17
12
8612 Penney Game   39 7622 67.55
4
3
12323 Minimum Knight moves !!!   128 7647 42.23
15
11
8061 Christmas Play   57 7719 48.23
6
4
4580 ABCDEF   216 7772 29.20
14
16
12471 DIE HARD   156 7843 39.09
11
14
78 Marbles   67 7863 34.96
15
13
8670 THE MAX LINES   29 8006 36.84
4
10
1805 Largest Rectangle in a Histogram   222 8042 27.59
18
24
39 Piggy-Bank   139 8065 35.44
14
16
1028 Hubulullu   60 8195 58.76
2
15
11515 I AM VERY BUSY   151 8264 45.24
9
11
2178 He is offside!   5 8344 50.12
3
4
740 Treats for the Cows   260 8465 42.60
13
14
31 Fast Multiplication   48 8606 20.64
15
12
27 Sorting Bank Accounts   53 8677 40.49
11
6

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