#include <bits/stdc++.h>
using namespace std;
template<typename A, typename B> ostream& operator<<(ostream &os, const pair<A, B> &p) { return os << '(' << p.first << ", " << p.second << ')'; }
template<typename T_container, typename T = typename enable_if<!is_same<T_container, string>::value, typename T_container::value_type>::type> ostream& operator<<(ostream &os, const T_container &v) { os << '{'; string sep; for (const T &x:v) os << sep << x, sep = ", "; return os << '}'; }
void dbg_out() { cerr << endl; }
template<typename Head, typename ... Tail> void dbg_out(Head H, Tail ... T) { cerr << ' ' << H; dbg_out(T...); }
#ifdef LOCAL
#define dbg(...) cerr << '(' << #__VA_ARGS__ << '):', dbg_out(__VA_ARGS__)
#else
#define dbg(...)
#endif
#define ll long long
#define pii pair<int, int>
#define mii map<int, int>
#define vii vector<int, int>
#define gcd(a,b) __gcd(a,b)
#define lcm(a,b) (a*(b/gcd(a,b)))
#define all(x) (x).begin() , (x).end()
int main() {
ios_base::sync_with_stdio(false);
cin.tie(0);
int n, m, res = 0;
cin >> n >> m;
int a[m] = {0};
for (int i = 0; i < n; i++) {
string s;
cin >> s;
int k = 0;
for (int j = m - 1; j >= 0; j--) {
if (s[j] == 'O') k++;
else if (s[j] == 'J') a[j] += k;
else res += a[j];
}
}
cout << res;
return 0;
}
