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You are given an array a consisting of n integers. A subarray (l, r) from array a is defined as non-empty sequence of consecutive elements al, al + 1, …, ar.The beauty of a subarray (l, r) is calcul...

Hypergnome planet is famous for its Great Universal Games between gnomes — the Games between gnomes from each part of the galaxy in various disciplines. The most popular discipline in the Games is th...

There is a very long board with length L centimeter, L is a positive integer, so we can evenly divide the board into L segments, and they are labeled by 1, 2, … L from left to right, each is 1 centime...