#include <bits/stdc++.h>
int aa[27]={0,1,2,3,1,2,3,1,2,3,1,2,3,1,2,3,1,2,3,4,1,2,3,1,2,3,4};
using namespace std;
int main()
{
    int ans=0;
    string a;
    getline(cin,a);
    int j=a.length();
    for(int i=0;i<j;i++)
    {
		if(a[i]>=97&&a[i]<=122)
		{
		ans+=aa[a[i]-'a'+1];
	}
	else ans++;
    }
    cout<<ans;
}