#include<stdio.h>
int min_x;
int min_y;
int max_x;
int max_y;
int ix,iy;
int cnt;
void init(){
cnt=0;
min_x=min_y=0x3f3f3f3f;
max_x=max_y=-10000000;
}
void solve()
{
printf("%d %d %d %d\n",min_x,min_y,max_x,max_y);
}
int main(int argc, char *argv[])
{
freopen("1020.in","r",stdin);
init();
while(scanf("%d%d",&ix,&iy)==2)
{
if(!(ix==0&&iy==0))
{
cnt++;
if(ix<min_x)min_x=ix;
if(iy<min_y)min_y=iy;
if(ix>max_x)max_x=ix;
if(iy>max_y)max_y=iy;
}
else{
if(cnt!=0)
{
solve();
init();
continue;
}
else
{
return 0;
}
}
}
return 0;
}