#include <bits/stdc++.h>
#define fi first
#define se second
#define int long long
using namespace std;
using ll = long long;
using ii = pair<int,int>;
using pii = pair<int,ii>;
using aa = array<int,4>;
const int N = 2005;
const int INF = 1e9;
const int MOD = 998244353;
int n,m,cnt,res = 0;
ii mx,mn;
int dx[4] = {1,0,-1,0};
int dy[4] = {0,1,0,-1};
bool vis[N][N];
char a[N][N];
bool ok(int i,int j){
return i >= 1 && i <= n && j >= 1 && j <= m && a[i][j] == '.' && !vis[i][j];
}
bool ok2(int i,int j){
return i > 1 && i < n && j > 1 && j < m;
}
void dfs(int i,int j){
vis[i][j] = 1;
cnt++;
mx = {max(mx.fi,i+j),max(mx.se,i-j)};
mn = {min(mn.fi,i+j),min(mn.se,i-j)};
for (int k = 0; k < 4; k++){
int x = i + dx[k];
int y = j + dy[k];
if (ok(x,y)) dfs(x,y);
}
}
signed main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL); cout.tie(NULL);
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] == '.' && !vis[i][j]){
cnt = 0;
mx = {-1e9,-1e9};
mn = {1e9,1e9};
dfs(i,j);
int tmp = (mx.fi - mn.fi) / 2 + 1;
res += (ok2(i,j) && (mx.fi - mn.fi) % 2 == 0 && tmp * tmp + (tmp - 1) * (tmp - 1) == cnt && mx.se - mn.se == mx.fi - mn.fi);
}
}
}
cout << res;
return 0;
}
