#include<bits/stdc++.h>
using namespace std;
int a[10][10],d[6]={0,0,0,0,0,0};
int c,b[6]={999999,999999,999999,999999,999999,999999};
int main()
{
	for(int i=1;i<=5;i++)
	{
		for(int j=1;j<=5;j++)
		{
			cin>>a[i][j];
		}
	}
	for(int i=1;i<=5;i++)
	{
		for(int j=1;j<=5;j++)
		{
			if(b[i]>a[i][j])
				b[i]=a[i][j];
		}
	}
	for(int i=1;i<=5;i++)
	{
		for(int j=1;j<=5;j++)
		{
			if(d[i]<a[i][j])
				d[i]=a[i][j];
		}
	}
	for(int i=0;i<5;i++)
		if(b[i]==d[i])
			c=b[i];
		else
			c=0;
	if(c==0)
		cout<<"not found";
	else
		cout<<c;
	return 0;
}