#include<stdio.h>
#include <iostream>
#include <cstring>
#include <math.h>
using namespace std;


int main(){
	
	
		
		int n;
		cin>>n;
		int a;
		int c=1;

		int k=log10(double(n))+1;
		//cout<<k<<endl;
		for(int i=0;i<k;i++){
			a=(n%int(pow(10,double(i+1)))) / pow(10,double(i));
			//cout<<a<<endl;
			switch(a){
			case 0:case 4:case 6:case 9:
				c+=3;break;
			case 8:
				c+=4;break;
			default:
				c+=2;
			}
		}
		cout<<c<<endl;
	
	
	return 0;
}