#include <bits/stdc++.h>
using namespace std;
int n;
int shu=0;
int main(int argc, char** argv)
{
cin>>n;
string shou;
string str;
for(int i=0;i<n;i++){
cin>>str;
for(int a=0;a<str.size();a++){
shou=str.substr(a,1);
if(shou=="a"||shou=="d"||shou=="g"||shou=="j"||shou=="m"||shou=="p"||shou=="t"||shou=="w"){
shu+=1;
}else if(shou=="b"||shou=="e"||shou=="h"||shou=="k"||shou=="n"||shou=="q"||shou=="u"||shou=="x"){
shu+=2;
}else if(shou=="c"||shou=="f"||shou=="i"||shou=="l"||shou=="o"||shou=="r"||shou=="v"||shou=="z"){
shu+=3;
}else if(shou=="s"||shou=="v"||shou=="z"){
shu+=4;
}
}
}
cout<<shu+n-1;
return 0;
}