#include <stdio.h>

int main()
{
	char a[9][4]={
	
	{'a','b','c','#'},
	{'d','e','f','#'},
	{'g','h','i','#'},
	{'j','k','l','#'},
	{'m','n','o','#'},
	{'p','q','r','s'},
	{'t','u','v','#'},
	{'w','x','y','z'},
	{' ','#','#','#'}
	};
	
	int i,j;
	int k;
    char ch[100];
		
	for(k=0;(ch[k]=getchar())!='\n';k++);
     	
    int count=0;
	
	for(k=0;ch[k]!='\n';k++){
	
	for(i=0;i<9;i++){
		for(j=0;j<4;j++){
			
			if(ch[k]==a[i][j]){
				
				count+=j+1;
				
			}
			
			
		}
		
	}
	
	
}
	
	printf("%d",count);
	
	return 0;
}