zk has n numbers a1,a2,...,an . For each (i,j) satisfying 1≤i<j≤n, zk generates a new number (ai+aj) . These new numbers could make up a new sequence b1,b2,...,bn(n−1)/2 . LsF wants to make
题目链接:http://codeup.cn/problem.php?cid=100000599&pid=0 题目描述 People often have a preference among synonyms of the same word. For example, some may prefer “the police”, while others may prefer “the cops