#include <bits/stdc++.h>
using namespace std;
#define ll long long
const int nx = 3005;
int h, w;
int a[nx][nx], b[nx][nx]; // a = O <-, b = I ^
vector<pair<int,int>> qrs;
ll ans = 0;
int main() {
ios_base::sync_with_stdio(0), cin.tie(0);
cin >> h >> w;
for (int i = 1; i <= h; i++) {
for (int j = 1; j <= w; j++) {
char x; cin >> x;
if (x == 'O') a[i][j]++;
else if (x == 'I') b[i][j]++;
else qrs.emplace_back(i, j);
}
}
for (int j = 1; j <= w; j++) {
for (int i = h; i >= 1; i--) {
b[i][j] += b[i + 1][j];
}
}
for (int i = 1; i <= h; i++) {
for (int j = w; j >= 1; j--) {
a[i][j] += a[i][j + 1];
}
}
for (auto [i, j] : qrs) {
ans += (ll)a[i][j + 1] * (ll)b[i + 1][j];
}
cout << ans;
}
