ronnielee

摘要： https://vjudge.net/contest/250229 problem/A include include include include include define eps 1e 7 define PI acos( 1.0) using namespace std; struct n 阅读全文

摘要： POJ 2318 链接（http://poj.org/problem?id=2318） 图论入门之判断直线与点的位置关系 include using namespace std; struct node { int x1,x2,y1,y2; }p[5050]; bool is_in(int x,in 阅读全文