摘要：
Description Memory is now interested in the de-evolution of objects, specifically triangles. He starts with an equilateral triangle of side length x, 阅读全文
摘要：
Description Memory is performing a walk on the two-dimensional plane, starting at the origin. He is given a string s with his directions for motion: A 阅读全文
摘要：
Description There are n integers b1, b2, ..., bn written in a row. For all i from 1 to n, values ai are defined by the crows performing the following 阅读全文