#include<stdio.h>
#include<string.h>
#define N 200
int fun(char *s);
int main()
{
	char s[N];
	gets(s);
	printf("%d",fun(s)); 
	return 0;
 } 
int fun(char *s)
{
	int i,t,n=0;
	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};
	for(i=0;i<strlen(s);i++)
	{
		t=s[i]-'a';
		n+=a[t];
		if(s[i]==' ')
		{
			n++;
		}
	}
	return n;
}

}