#include <bits/stdc++.h>
using namespace std;
int main() {
	char a[2001];
	long long ans=0;
	cin.getline(a,2001);
	int l=strlen(a);
	for(int i=0; i<l; i++) {
		if(a[i]=='a'||a[i]=='d'||a[i]=='g'||a[i]=='j'||a[i]=='m'||a[i]=='p'||a[i]=='t'||a[i]=='w') ans+=1;
		else if(a[i]=='z'||a[i]=='s') ans+=4;
		else if(a[i]=='b'||a[i]=='e'||a[i]=='h'||a[i]=='k'||a[i]=='n'||a[i]=='q'||a[i]=='u'||a[i]=='x') ans+=2;
		else if(a[i]=='c'||a[i]=='f'||a[i]=='i'||a[i]=='l'||a[i]=='o'||a[i]=='r'||a[i]=='v'||a[i]=='y') ans+=3;
		else ans+=1;
	}
	cout<<ans;
}