#include<cstdio>


int main(void)
{
	int c[]={1,0,0,0,1,0,1,0,2,1};
	int n, r, hall;

	while(scanf("%d", &n)==1)
	{
		r=0;
		hall=0;
		do
		{
			hall+=c[n%10];
			r++;
			n/=10;
		}
		while(n>0);
		if(hall) printf("%d\n", r*2+hall+1);
		else printf("%d\n", r+2);
	}
	return 0;
}