// #pragma GCC optimize("Ofast,unroll-loops")
#include "bits/stdc++.h"
using namespace std;
#ifdef duc_debug
#include "bits/debug.h"
#else
#define debug(...)
#endif
// #define int long long
int n;
string s;
void solve(){
cin >> n;
int ans = 0;
for(int i = 1; i <= n; i++){
cin >> s;
for(int j = 0; j < 13; j++){
if(s[j] == 'A') ans += 4;
if(s[j] == 'K') ans += 3;
if(s[j] == 'Q') ans += 2;
if(s[j] == 'J') ans += 1;
}
}
cout << ans;
}
signed main(){
ios_base::sync_with_stdio(0);
cin.tie(0);
int test = 1;
// cin >> test;
for(int i=1;i<=test;i++){
// cout << "Case " << "#" << i << ": ";
solve();
}
return 0;
}