#include <bits/stdc++.h>
using namespace std;
typedef long long int lo;
typedef pair< int,int > PII;
#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define fio() ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define FOR for(int i=1;i<=n;i++)
const int inf = 1000000000;
const int mod = 1000000007;
const int KOK = 100000;
const int li = 100005;
const int LOG = 20;
lo n,m,cev,x,k,a[li];
vector<int> v;
char c;
string s;
int main(){
fio();
cin>>n;
for(int i=0;i<n;i++){
cin>>s;
for(int j=0;j<(int)s.size();j++){
if(s[j]=='A') cev+=4;
if(s[j]=='Q') cev+=2;
if(s[j]=='K') cev+=3;
if(s[j]=='J') cev+=1;
}
}
cout<<cev;
return 0;
}
