hdu 1828 picture题目大意：解题思路：
题目大意：求矩形并周长；解题思路：没啥思路，看着网上大牛写的，顺便练了下代码；#include#include#includeusing namespace std;#define maxn 100010#define L(a) (a)<<1#define R(a) (a)<<1|1struct Line{ int l,r,h,s; Line(){} Lin
