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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 24.43
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 5545 17.54
33
27
23 Pyramids   -20 5592 36.97
9
15
247 Chocolate   74 5695 44.34
10
18
9734 Hacking the random number generator   61 5726 38.83
8
6
10232 Distinct Primes   83 5772 45.50
10
9
10239 Between the Mountains   36 5772 39.10
7
7
13043 The Mirror of Galadriel   33 5904 64.49
2
3
21357 Crucial Equation   79 5994 38.14
4
9
91 Two squares or not two squares   79 5996 24.55
11
14
10286 DOTA HEROES   43 6020 45.00
3
5
1688 A Very Easy Problem!   40 6162 49.24
12
11
9494 Just Add It   75 6195 47.90
11
10
2716 Maximal Quadrilateral Area   -1 6216 50.28
3
8
3693 Maximum Sum   57 6355 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 6686 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 6785 36.48
12
11
4033 Phone List   149 6788 31.33
16
14
15965 PLAY WITH MATH   60 6820 46.48
4
5
6471 Printing some primes   68 6856 28.59
13
12
9788 Friends of Friends   66 7106 63.23
7
5
6470 Finding the Kth Prime   48 7112 27.23
19
14
14932 Lowest Common Ancestor   230 7303 29.17
15
15
9921 ABC Path   158 7334 21.80
15
12
5699 The last digit re-visited   39 7437 31.67
9
9
4452 Simple Arithmetics II   55 7442 42.37
11
5
15 The Shortest Path   156 7454 24.13
17
12
8612 Penney Game   39 7622 67.55
4
3
12323 Minimum Knight moves !!!   128 7643 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 7842 39.09
11
14
78 Marbles   67 7862 34.96
15
13
8670 THE MAX LINES   29 8006 36.84
4
10
1805 Largest Rectangle in a Histogram   222 8034 27.57
18
24
39 Piggy-Bank   139 8063 35.44
14
16
1028 Hubulullu   60 8194 58.76
2
15
11515 I AM VERY BUSY   151 8259 45.24
9
11
2178 He is offside!   5 8344 50.12
3
4
740 Treats for the Cows   260 8464 42.60
13
14
31 Fast Multiplication   48 8605 20.64
15
12
27 Sorting Bank Accounts   53 8676 40.50
11
6

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