#include <bits/stdc++.h>
using namespace std;
#define int long long
#define endl '\n'
int dx[4] = {0,0,1,-1};
int dy[4] = {1,-1,0,0};
void paint(int x, int y, vector<vector<int> > &g) {
g[x][y] = 1;
for (int i = 0; i < 4; ++i) {
if (!g[x+dx[i]][y+dy[i]]) paint(x+dx[i],y+dy[i],g);
}
}
signed main() {
int n, m; cin>>n>>m;
vector<vector<int> > g(n+2,vector<int>(m+2,0)), pre(n+2,vector<int>(m+2,0));
for (int i = 1; i <= n; ++i) {
for (int j = 1; j <= m; ++j) {
char x; cin>>x;
g[i][j] = (x == '#');
}
}
for (int i = 1; i <= n; ++i) {
for (int j = 1; j <= m; ++j) {
pre[i][j] = pre[i][j-1]+g[i][j];
}
}
int ans = 0;
for (int i = 1; i <= n; ++i) {
for (int j = 1; j <= m; ++j) {
if (g[i][j]) {
int k = 0;
while(g[i+k][j+k] && g[i+k][j-k] &&
(pre[i+k][j+k-1]-pre[i+k][j-k] == 0 || !k)) {
k++;
}
int tk = k;
k -= 2;
while(g[i+tk][j+k] && g[i+tk][j-k] &&
(pre[i+tk][j+k-1]-pre[i+tk][j-k] == 0 || !k) && k >= 0) {
k--;
tk++;
}
k++, tk--;
//cout<<i<<' '<<j<<' '<<k<<' '<<tk<<endl;
if (!k && g[i+tk][j] && tk) ans++;
}
}
}
cout<<ans<<endl;
return 0;
}
