#include<stdio.h>
#include<string.h>
#define minn(a,b)(a<b?a:b)
#define maxm(c,d)(c>d?c:d) 
int main()
{
	int n,m,j,i,sum,maxx,maxy,minx,miny,x,y;
	while(1)
	{
		sum=0;
		minx=250;miny=250;maxx=-250;maxy=-250;//注意对maxx和maxy初值的赋值要大于体中要求的231 
		while(scanf("%d %d",&x,&y)!=EOF)
		{
			sum++;
			if(sum==1)
			{
				if(x==0&&y==0)
				return 0;
			}	
			if(sum>1)
			{
				if(x==0&&y==0)
				break;
			}			
			if(minx>x)
			minx=x;
			if(maxx<x)
			maxx=x;
			if(miny>y)
			miny=y;
			if(maxy<y)
			maxy=y;
		}			
		printf("%d %d %d %d\n",minx,miny,maxx,maxy);
	}	
	return 0;
}