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A. The Artful Expedient After Karen have found the deterministic winning (losing?) strategy for rock-paper-scissors, her brother, Koyomi, comes up wit 阅读全文
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Given two equally sized arrays A and B of size N. A is empty and B has some values. You need to fill A with an element X such that X belongs to B. The 阅读全文
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Description Your task is to write a program, which, given two circles, calculates the area of their intersection with the accuracy of three digits aft 阅读全文
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A sheep lives on an infinite field. The sheep wants to eat some grass. Grass only exists in one place. That place is a circle defined by a center poin 阅读全文