#include <stdio.h>

int main(void)
{
    int n,s1=0,s2=2,t[10]={0};
    scanf("%d",&n);
    do{
        s1++;
        s2++;
        t[n%10]++;
    }while(n/=10);
    s1*=2;
    s1++;
    s1+=t[0];
    s1+=t[4];
    s1+=t[6];
    s1+=t[8]*2;
    s1+=t[9];
    s2+=t[0]*2;
    s2+=t[4]*2;
    s2+=t[6]*2;
    s2+=t[8]*4;
    s2+=t[9]*2;
    if(s1>s2)printf("%d",s2);
    else printf("%d",s1);
    return 0;
}