摘要：
252K 16MS#include<stdio.h>#include<string.h>#include<stdlib.h>#include<math.h>#include<algorithm>using namespace std;struct point{ double x; double y;};struct map{ point up; point down;}m[1000];struct node{ int L; int R; node *left; node *right; double len;//区间的长度 int c 阅读全文
