4397:
博客地址:https://www.cnblogs.com/ZhenghangHu/
4397:
博客地址:https://www.cnblogs.com/ZhenghangHu/
Leetcode 11 Container with most water双指针
Codeforces 988D Points and Powers of Two 性质卡常
Codeforces 963B Destruction of a Tree 贪心
Codeforces 963A Alternating Sum 数论+数学
HDU 4069 Squiggly Sudoku舞蹈链样例坑