#include<bits/stdc++.h>
using namespace std;
const int N=100010;
char s[N];
int main()
{  
    cin.getline(s,N);
    int n=strlen(s);
    int cnt=0;
    for(int i=0;i<n;i++)
    {
     if(s[i]==' ')
	 {
		 cnt=cnt+1;
	 }
	 if(s[i]=='a'||s[i]=='d'||s[i]=='g'||s[i]=='j'||s[i]=='m'||s[i]=='p'||s[i]=='t'||s[i]=='w') 
	 {
	 	cnt=cnt+1; 
	 }
	 if(s[i]=='b'||s[i]=='e'||s[i]=='h'||s[i]=='k'||s[i]=='n'||s[i]=='q'||s[i]=='u'||s[i]=='x') 
	 {
	 	cnt=cnt+2; 
	 }
	 if(s[i]=='c'||s[i]=='f'||s[i]=='i'||s[i]=='l'||s[i]=='o'||s[i]=='r'||s[i]=='v'||s[i]=='y')
	 {
	 	cnt=cnt+3;
	  } 
	  if(s[i]=='s'||s[i]=='z')
	  {
	  	cnt=cnt+4; 
	  }
	}
	cout<<cnt; 
	return 0;
}

#include<bits/stdc++.h>
using namespace std;
int b[]={1,1,2,3,1,2,3,1,2,3,1,2,3,1,2,3,1,2,3,4,1,2,3,1,2,3,4};
char a[10000000];
int main()
{
    cin.getline(a,10000000);
    int n=strlen(a),cnt=0;
    for(int i=0;i<n;i++)
    {
        if(a[i]==' ') cnt++;
        else cnt+=b[int(a[i]-96)];
    }
    cout<<cnt;
}