#include <bits/stdc++.h>
using namespace std;
signed main() {
cin.tie(0); ios::sync_with_stdio(false);
int H, W;
cin >> H >> W;
vector<vector<int>> G(H, vector<int>(W)), orb(H, vector<int>(W)), ingot(H, vector<int>(W));
for(int i = 0; i < H; i++) for(int j = 0; j < W; j++) {
char c; cin >> c;
if (c == 'O') G[i][j] = 1;
if (c == 'I') G[i][j] = -1;
}
for(int i = 0; i < H; i++) {
int cnt = 0;
for(int j = W-1; j >= 0; j--) {
orb[i][j] = cnt;
cnt += G[i][j] == 1;
}
}
for(int j = 0; j < W; j++) {
int cnt = 0;
for(int i = H-1; i >= 0; i--) {
ingot[i][j] = cnt;
cnt += G[i][j] == -1;
}
}
int re = 0;
for(int i = 0; i < H; i++) {
for(int j = 0; j < W; j++) {
if (!G[i][j]) re += orb[i][j] * ingot[i][j];
}
}
cout << re ;
}
