#include <bits/stdc++.h>

using namespace std;
using ll = long long;

#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
#define pb push_back
#define ff first
#define sc second

signed main() {
    ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);

    int n, m; cin >> n >> m;
    vector<string> s(n);
    for (int i = 0; i < n; i++) cin >> s[i];
    ll ans = 0;
    vector<int> cnt(n);
    for (int j = m - 1; j >= 0; j--) {
        int cc = 0;
        for (int i = n - 1; i >= 0; i--) {
            if (s[i][j] == 'J') {
                ans += cc * 1ll * cnt[i];
            }
            cc += s[i][j] == 'I';
            cnt[i] += s[i][j] == 'O';
        }
    }
    cout << ans << '\n';

    return 0;
}