#include<bits/stdc++.h>
using namespace std;
int n,m,c,o,i; string s;
int main(){
    scanf("%d",&n);
    for(int j=1;j<=n;j++){
        cin>>s;
        if(s[0]=='M') m++;
        if(s[0]=='C') c++;
        if(s[0]=='O') o++;
        if(s[0]=='i') i++;
    }
    printf("%d",m*c*o*i);
    return 0;
}