#include<bits/stdc++.h>
using namespace std;
int n,m,sum,tx[4]={0,1,0,-1},ty[4]={-1,0,1,0};
char a[105][105];
void dfs(int x,int y){
	a[x][y]='.';
	for(int i=0;i<=3;i++){
	int fx=tx[i]+x;
	int fy=ty[i]+y;
	if(a[fx][fy]=='#'){
		dfs(fx,fy);
	} 
}
}
int main(){
	cin>>n>>m;
	for(int i=1;i<=n;i++){
		for(int j=1;j<=m;j++){
			cin>>a[i][j]; 
		}
	}
	for(int i=1;i<=n;i++){
		for(int j=1;j<=m;j++){
			if(a[i][j]=='#'){
				sum++;
				dfs(i,j);
			}
		}
	}
	cout<<sum; 
} 
/**************************************************************
	Problem: 1383
	User: panyuchen
	Language: C++
	Result: Accepted
	Time:6 ms
	Memory:2084 kb
****************************************************************/