#include <bits/stdc++.h>
using namespace std;
const long long INFll = (long long) 1e18 + 10;
const int INFii = (int) 1e9 + 10;
typedef long long ll;
typedef int ii;
typedef long double dbl;
#define endl '\n'
#define sc second
#define fr first
#define mp make_pair
#define pb push_back
#define all(x) x.begin(), x.end()
#define maxn 3300
ii n, m, sfi[maxn];
string s[maxn];
int main() {
ios::sync_with_stdio(false); cin.tie(0);
//freopen("in.in", "r", stdin);
//freopen("out.out", "w", stdout);
cin >> n >> m;
for(ii i = 1; i <= n; i++) {
cin >> s[i];
}
ll ans = 0;
for(ii i = n; i >= 1; i--) {
ii orb = 0;
for(ii j = m-1; j >= 0; j--) {
if(s[i][j] == 'I') sfi[j]++;
if(s[i][j] == 'O') orb++;
if(s[i][j] == 'J') {
ans+= sfi[j]*orb;
}
}
}
cout << ans << endl;
}
