lovelycaier

摘要： You are given an array aa consisting of n integers. Your task is to say the number of such positive integers x such that x divides each number from th 阅读全文

摘要： 我们定义一个不上升的且和为 n 的正整数序列，叫做 n 的分解. 比如, 下面是8的分解: [4, 4], [3, 3, 2], [2, 2, 1, 1, 1, 1], [5, 2, 1]. 而这些则不是8的分解: [1, 7], [5, 4], [11, -3], [1, 1, 4, 1, 1]. 阅读全文