#include<bits/stdc++.h>
using namespace std;
int n;
string a;
int m[26]={1,2,3,1,2,3,1,2,3,1,2,3,1,2,3,1,2,3,4,1,2,3,1,2,3,4};
int main(){
    getline(cin,a);
    for(int i=0;i<a.length();i++){
        if(a[i]>='a'&&a[i]<='z') n+=m[a[i]-'a'];
        if(a[i]==' ') n++;
    }
    cout<<n;
    return 0;
}