#include "bits/stdc++.h"
using namespace std;

#define REP(i,n) for(int (i)=0;(i)<(int)(n);(i)++)
#define RREP(i,n) for(int (i)=(int)(n)-1;i>=0;i--)
#define REMOVE(Itr,n) (Itr).erase(remove((Itr).begin(),(Itr).end(),n),(Itr).end())
#define MOD  1000000007
#define INF  0x3f3f3f3f
#define INFL 0x3f3f3f3f3f3f3f3fLL
typedef long long ll;

int main() {
    
    string s; cin >> s;
    int ans = 1;
    REP(i,s.size()) {
        char t = s[i] - '0';
        if(t==1||t==2||t==3||t==5||t==7) ans += 2;
        if(t==0||t==4||t==6||t==9) ans += 3;
        if(t==8) ans += 4;
    }
    
    cout << ans << endl;
    
    return 0;
}