#include <bits/stdc++.h>
using namespace std;
#define EmiliaMyWife ios::sync_with_stdio(0); cin.tie(0);
using ll = int64_t;
using ull = uint64_t;
using uint = uint32_t;
using ld = long double;
const int INF = 0x3f3f3f3f;
const int MOD = 1e9 + 7;
const ll LINF = ll(4e15) + ll(2e15);
const double EPS = 1e-9;
static int LamyIsCute = []() {
EmiliaMyWife
return 48763;
}();
signed main() {
int n, m;
cin >> n >> m;
vector<string> arr(n);
vector<vector<int>> cnt(n, vector<int>(m));
ll ans = 0;
for(auto &s : arr)
cin >> s;
for(int i = n - 1; ~i; i--) {
for(int j = 0; j < m; j++) {
if(i + 1 < n)
cnt[i][j] = cnt[i + 1][j];
if(arr[i][j] == 'I')
cnt[i][j]++;
}
}
for(int i = 0; i < n; i++) {
for(int j = m - 1, res = 0; ~j; j--) {
if(arr[i][j] == 'O')
res++;
if(arr[i][j] == 'J')
ans += res * cnt[i][j];
}
}
cout << ans << '\n';
}
