#include<bits/stdc++.h>
using namespace std;
//输入保证正确
//输出看仔细
//所有情况都测
//数组定义，保证正确
char a [ 15 ] [ 15 ] , b [ 15 ] [ 15 ] , c [ 15 ] [ 15 ] ;
bool check ( int n )
{
	for ( int i = 1 ; i <= n; i ++ )
	{
		for ( int j = 1 ; j <= n ; j ++ )
		{
			if( b [ i ] [ j ] != c [ i ] [ j ] )
			{
				return false ;
			}
		}
	}
	return true ;
}
void jsd ( int n )
{
	char d [ 15 ] [ 15 ] ;
	for( int i = 1 ; i <= n ; i ++ )
	{
		for( int j = 1 ; j <= n ; j ++ )
		{
			d [ i ] [ j ] = b [ i ] [ j ] ;
		}
	}
	for( int i = 1 ; i <= n ; i ++ )
	{
		for( int j = 1 ; j <= n ; j ++ )
		{
			b [ j ] [ i ] = d [ n + 1 -i ] [ j ] ;
		}
	}
}
void jx ( int n )
{
	char d [ 15 ] [ 15 ] ;
	for( int i = 1 ; i <= n ; i ++ )
	{
		for( int j = 1 ; j <= n ; j ++ )
		{
			d [ i ] [ j ] = b [ i ] [ j ] ;
		}
	}
	for( int i = 1 ; i <= n ; i ++ )
	{
		for( int j = 1 ; j <= n ; j ++ )
		{
			b [ i ] [ j ] = d [ i ] [ n + 1 - j ] ;
		}
	}
}  
int main()
{
	int n ;
	cin >> n ;
	for( int i = 1 ; i <= n ; i ++ )
	{
		for( int j = 1; j <= n ; j ++ )
		{
			 cin >> a [ i ] [ j ] ;
			 b [ i ] [ j ] = a [ i ] [ j ] ; 
		}	
	}
	for( int i = 1 ; i <= n ; i ++ )
	{
		for( int j = 1; j <= n ; j ++ )
			cin >> c [ i ] [ j ] ;
	}
	jsd ( n ) ;
	if( check ( n ) == true )
	{
		cout<< 1 << endl ;
		return 0 ;
	}	
	jsd ( n ) ;
	if( check ( n ) == true )
	{
		cout<< 2 << endl ;
		return 0 ;
	}
	jsd ( n ) ;
	if( check ( n ) == true )
	{
		cout<< 3 << endl ;
		return 0 ;
	}
	jsd ( n ) ;
	jx ( n ) ;
	if( check ( n ) == true ) 
	{
		cout<< 4 << endl ;	
		return 0 ;
	}
	jsd ( n ) ;
	if( check ( n ) == true ) // zu
	{
		cout<< 5 << endl ;
		return 0 ;
	}
	jsd ( n ) ;
	if( check ( n ) == true )
	{
		cout<< 5 << endl ;
		return 0 ;
	}
	jsd ( n ) ;
	if( check ( n ) == true )
	{
		cout<< 5 << endl ;
		return 0 ;
	}
	jsd ( n ) ;
	if( check ( n ) == true )
	{
		cout<< 6 << endl ;
		return 0 ;
	}
	else
	{
		cout << 7 << endl ;
		return 0 ;
	}	
 	return 0;
}