#include <stdio.h>
#include <string.h>
int main()
{
	char s[201];
	int i,j,count = 0;
	gets(s);
	for(i=0;i<strlen(s);i++)
	{
		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'||s[i]==' '){
			count++;
		}
		else 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'){
			count += 2;
		}
		else 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'){
			count += 3;
		}
		else{
			count += 4;
		}
	}
	printf("%d ",count);
	return 0;
}