#include<bits/stdc++.h>
using namespace std;
int main()
{
char c[10][10];
int R,C,four,cnt = 0;
cin >> R >> C;
for(int i = 0;i < R;i++)
for(int j = 0;j < C;j++)
cin >> c[i][j];
for(int i = 1;i < R - 1;i++)
for(int j = 1;j < C - 1;j++)
{
four = 0;
if(c[i][j] == '.')
{
if(c[i + 1][j] == 'X')
four++;
if(c[i - 1][j] == 'X')
four++;
if(c[i][j - 1] == 'X')
four++;
if(c[i][j + 1] == 'X')
four++;
}
if(four >= 3)
{
cout << 1;
return 0;
}
}
cout << 0 << endl;
return 0;
}