#include <iostream>
#include <vector>
#include <cmath>
#include <algorithm>
#include <deque>
#include <map>
#include <set>
#include <complex>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <random>
#define ft first
#define sc second
#define pb push_back
#define len(v) (int)v.size()
#define int ll
using namespace std;
typedef long long ll;
signed main() {
#ifdef PC
freopen("in.txt", "r", stdin);
freopen("out.txt", "w", stdout);
#endif
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int h, w;
cin >> h >> w;
vector<vector<char>> mat(h, vector<char>(w));
for (int i = 0; i < h; i++) {
for (int j = 0; j < w; j++) {
cin >> mat[i][j];
}
}
int ans = 0;
vector<int> have(w, 0);
for (int i = h - 1; i >= 0; i--) {
int now = 0;
for (int j = w - 1; j >= 0; j--) {
if(mat[i][j] == 'I')
have[j]++;
if(mat[i][j] == 'O')
now++;
if(mat[i][j] == 'J') {
ans += have[j] * now;
}
}
}
cout << ans << '\n';
return 0;
}
