#include<bits/stdc++.h>
using namespace std;
#define ll long long
const ll m=2005;
ll n,k,s;
char c[m][m];
bool b[m][m];
ll dx[4]={0,1,0,-1};
ll dy[4]={1,0,-1,0};
ll l,r,u,d,o,t;
void f(ll x,ll y){
if(x==0||x==n+1||y==0||y==k+1)
{
o=0;
return;
}
if(b[x][y]||c[x][y]=='#')
{
return;
}
b[x][y]=1;
t++;
l=min(l,x+y);
r=max(r,x+y);
u=min(u,x-y);
d=max(d,x-y);
for(ll i=0;i<4;i++)
{
ll p=x+dx[i];
ll q=y+dy[i];
f(p,q);
}
}
int main(){
ios::sync_with_stdio(0);
cin.tie(0);
cin>>n>>k;
for(ll i=1;i<=n;i++)
{
for(ll j=1;j<=k;j++)
{
cin>>c[i][j];
}
}
for(ll i=1;i<=n;i++)
{
for(ll j=1;j<=k;j++)
{
if(b[i][j]||c[i][j]=='#')
{
continue;
}
l=u=1e18;
r=d=-1e18;
o=1;
t=0;
f(i,j);
if(r-l==d-u&&(r-l)%2==0&&o)
{
ll v=(r-l)/2+1;
if(t==2*v*v-2*v+1)
{
s++;
}
}
}
}
cout<<s<<endl;
return 0;
}
