#include<bits/stdc++.h>
using namespace std;
int a[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(){
	string s;
	getline(cin,s);
	int ans=0;
	for(int i=0;i<s.size();i++){
		if(s[i]>='a'&&s[i]<='z') ans+=a[s[i]-'a'];
		if(s[i]==' ') ans++;
	}
	cout<<ans<<endl;
	return 0;
}