#include <iostream> #include <math.h> #include <vector> #include <string> #include <algorithm> #include <queue> #include <stack> #include <map> #include <cstring> #include <iomanip> #include <set> #include <bitset> using namespace std; using ll = long long; using pii = pair<int,int>; using piii = tuple<int,int,int>; #define endl '\n' int main(){ int n;cin >> n; int m;cin >> m; vector<pii> Jcnt; vector<int> sumI(m,0); vector<int> sumO(n,0); for(int i{};i < n;i++){ string str;cin >> str; for(int j{};j < m;j++){ char c = str[j]; if(c == 'I') sumI[j]++; else if(c == 'O') sumO[i]++; else if(c == 'J') Jcnt.emplace_back(i,j); } } int sum = 0; for(auto [i,j]:Jcnt){ sum += sumO[i]*sumI[j]; } cout << sum; }