#include<iostream> using namespace std; int main() { int x[50]; int y[50]; int min_x=0,max_x=0,max_y=0,min_y=0; int i=0; int count_0=0; while(cin>>x[i]>>y[i]) { if(x[i]==0&&y[i==0]) { i=0; count_0++; cout<<min_x<<" "<<min_y<<" "<<max_x<<" "<<max_y<<endl; continue; } if(count_0==2) { break; } if(i==0) { min_x=max_x=x[0]; min_y=max_y=y[0]; } min_x=min(min_x,x[i]); min_y=min(min_y,y[i]); max_x=max(max_x,x[i]); max_y=max(max_y,y[i]); i++; } }