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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
25 Pouring water   100 5452 24.26
19
22
3946 K-th Number   240 5455 34.84
25
27
61 Brackets   177 5460 24.39
19
20
1845 Mice and Maze   100 5460 36.06
10
10
10394 Buying Apples!   72 5512 34.83
12
14
1163 Java vs C ++   17 5513 22.85
14
5
694 Distinct Substrings   91 5643 26.49
21
24
23 Pyramids   -20 5661 36.81
9
15
3266 K-query   246 5688 24.97
21
25
375 Query on a tree   165 5699 17.52
33
27
10239 Between the Mountains   36 5797 39.14
7
7
9734 Hacking the random number generator   61 5829 38.94
8
6
247 Chocolate   74 5858 43.65
10
18
10232 Distinct Primes   85 5860 45.44
10
9
13043 The Mirror of Galadriel   33 5950 64.44
2
3
91 Two squares or not two squares   79 6043 24.61
11
14
10286 DOTA HEROES   44 6070 44.91
3
5
1688 A Very Easy Problem!   40 6163 49.21
12
11
21357 Crucial Equation   80 6240 38.11
4
9
2716 Maximal Quadrilateral Area   -1 6241 50.24
3
8
9494 Just Add It   76 6307 47.79
11
10
7169 Pizza   45 6420 29.97
10
8
3693 Maximum Sum   58 6498 42.27
19
18
12150 Just Next !!!   74 6597 23.05
12
11
2906 GCD2   60 6818 36.47
12
11
8001 Fibonacci Sum   179 6868 27.76
19
19
15965 PLAY WITH MATH   60 6873 46.45
4
5
7718 Number of common divisors   86 7015 24.77
12
13
4033 Phone List   151 7077 31.58
16
14
9788 Friends of Friends   67 7129 63.27
7
5
8869 Roti Prata   62 7139 39.56
15
17
6471 Printing some primes   70 7388 28.77
13
11
5699 The last digit re-visited   39 7450 31.69
9
9
4452 Simple Arithmetics II   55 7460 42.39
11
5
6470 Finding the Kth Prime   48 7577 27.24
19
14
15 The Shortest Path   157 7587 24.08
17
12
9921 ABC Path   160 7618 21.78
15
12
14932 Lowest Common Ancestor   233 7638 29.14
15
15
8612 Penney Game   38 7708 67.21
4
3
8061 Christmas Play   57 7751 48.28
6
4
4580 ABCDEF   218 7836 29.23
14
16
12471 DIE HARD   157 7929 38.88
12
13
78 Marbles   68 8013 34.97
15
13
8670 THE MAX LINES   29 8027 36.86
4
10
39 Piggy-Bank   140 8147 35.44
14
16
12323 Minimum Knight moves !!!   132 8166 42.37
15
11
1028 Hubulullu   61 8237 58.72
2
15
2178 He is offside!   5 8406 50.13
3
4
11515 I AM VERY BUSY   151 8446 45.19
9
11
1805 Largest Rectangle in a Histogram   228 8459 28.06
18
23

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