摘要：
原题 TinyURL is a URL shortening service where you enter a URL such as https://leetcode.com/problems/design tinyurl and it returns a short URL such as h 阅读全文
摘要：
原题 A group of two or more people wants to meet and minimize the total travel distance. You are given a 2D grid of values 0 or 1, where each 1 marks th 阅读全文