摘要：#include <iostream>using namespace std;struct point{ int x; int y;}P[705];int n,sum,tol;int main(){ int i,j,k; while(cin>>n,n) { tol=0; for(i=0;i<n;i++) cin>>P[i].x>>P[i].y; for(i=0;i<n;i++) { for(j=i+1;j<n;j+... 阅读全文