#include <bits/stdc++.h>
typedef  long long ll;
#define INF 1000000000
using namespace std;
#define N 1000000
#define MOD 1000000007
int main(void){
    ll n;
    cin>>n;
    int num[10]={0};
    int nakami[10]={0};
    nakami[0]=1;
    nakami[4]=1;
    nakami[6]=1;
    nakami[9]=1;
    nakami[8]=2;
    int cnt=0;
    while(n){
        num[n%10]++;
        cnt++;
        n/=10;
    }
    int ans=0;
    ans+=cnt*2;
    for(int i=0;i<10;i++){
        ans+=num[i]*nakami[i];
    }
    ans++;
    cout<<ans<<endl;
}