#include <bits/stdc++.h> using namespace std; int numRow, numCol; char a[3030][3030]; int sumI[3030]; int main() { ios_base::sync_with_stdio(false);cin.tie(nullptr); cin >> numRow >> numCol; for (int i = 1; i <= numRow; ++i) { string s; cin >> s; for (int j = 1; j <= numCol; ++j) { a[i][j] = s[j - 1]; } } long long ans = 0; for (int i = numRow; i >= 1; --i) { long long pre = 0; for (int j = 1; j <= numCol; ++j) { if (a[i][j] == 'I') sumI[j] += 1; else if (a[i][j] == 'J') pre += sumI[j]; else ans += pre; } } cout << ans; return 0; }