#include <iostream>
#include <cstring>
using namespace std;
int main()
{
	int cnt[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},sum=0;
	char a[200];cin.getline(a,200);
	for(int i=0;i<strlen(a);i++)
	{
		if(a[i]>='a'&&a[i]<='z')sum+=cnt[a[i]-'a'];
		if(a[i]==' ') sum++;
	}
	cout<<sum;
	return 0;
}