#include <bits/stdc++.h>
using namespace std;
int n,m,sum;
char c[1000][1000]; 
int main(){
	cin >>n>>m;
	for(int i=1;i<=n;i++){
		for(int j=1;j<=m;j++){
			cin >>c[i][j];
		}
	}
	for(int i=1;i<=n;i++){
		for(int j=1;j<=m;j++){
			if(i==1||i==n||j==1||j==m) continue;
			if(c[i+1][j]=='*'&&c[i-1][j]=='*'&&c[i][j-1]=='*'&&c[i][j+1]=='*') sum++;
		}
	}
	cout <<sum;
	return 0;
}