#include <bits/stdc++.h> using namespace std; #define int long long #define N 500005 int tc = 1, n, a[N], ans, m; string s[N]; int32_t main() { ios::sync_with_stdio(0);cin.tie(0); cin >> n >> m; vector <vector <int>> O(n + 5, vector <int> (m + 5, 0)); for(int i = 1; i <= n; i++) { cin >> s[i]; s[i] = '.' + s[i]; } for(int i = 1; i <= n; i++) { for(int j = m; j >= 1; j--) { O[i][j] = O[i][j + 1] + (s[i][j] == 'O'); } } for(int i=1; i <= n; i++) { for(int j = 1; j <= m; j++) { if(s[i][j] == 'J') { for(int k = i + 1; k <= n; k++) { if(s[k][j] == 'I') { ans += (O[i][j]); // cout << i << " " << j << " " << k << " " << l << '\n'; } } } } } cout << ans << '\n'; return 0; }