#include <bits/stdc++.h>
#define pb push_back
#define pf push_front
using namespace std;
#define F first
#define S second
typedef long long ll;
#define pii pair <int, int>
#define pll pair <ll, ll>
typedef long double ld;
const ll N = 3000 + 100, M = 4096 + 10, len = 21, inf = 1e18;
const ll mod = 1e9 + 7;
ll cnt[N];
char a[N][N];
int main() {
ios::sync_with_stdio(false);
cin.tie(NULL);
ll n, m, ans = 0;
cin >> n >> m;
for(ll i = 1; i <= n; i++){
string s;
cin >> s;
for(ll j = 1; j <= m; j++){
a[i][j] = s[j - 1];
if(a[i][j] == 'I') cnt[j]++;
}
}
for(ll i = 1; i <= n; i++){
ll sum = 0;
for(ll j = 1; j <= m; j++){
if(a[i][j] == 'I') cnt[j]--;
if(a[i][j] == 'J') sum += cnt[j];
if(a[i][j] == 'O') ans += sum;
}
}
cout << ans;
return 0;
}
