摘要: 题目: You are given an array a of n integers. Find the number of pairs (i,j)(1≤i<j≤n) where the sum of ai+aj is greater than or equal to l and less than 阅读全文
posted @ 2021-06-15 09:09 starlightlmy 阅读(52) 评论(0) 推荐(0)