就是找x,y最小最大的组合,分开找就好,注意判断输出
#include<iostream>
#include<algorithm>
using namespace std;
int x[100000], y[100000];
int main()
{
int i=0;
while((cin>>x[i]>>y[i])&&(x[i]||y[i]))
{
i++;
while((cin>>x[i]>>y[i])&&(x[i]||y[i]))
i++;
sort(x,x+i);
sort(y,y+i);
cout<<x[0]<<" "<<y[0]<<" "<<x[i-1]<<" "<<y[i-1]<<endl;
i=0;
}
return 0;
}