#include<iostream>
using namespace std;
string s;
int Full(int i)
{
    int br;
    if(s[i]=='0')br=1;
    if(s[i]=='1')br=8;
    if(s[i]=='2')br=8;
    if(s[i]=='3')br=4;
    if(s[i]=='4')br=8;
    if(s[i]=='5')br=4;
    if(s[i]=='6')br=4;
    if(s[i]=='7')br=2;
    if(s[i]=='8')br=7;
    if(s[i]=='9')br=4;
    if(s[i]=='A')br=3;
    if(s[i]=='B')br=2;
    if(s[i]=='C')br=4;
    if(s[i]=='D')br=2;
    if(s[i]=='E')br=2;
    return br;
}
void Solve()
{
    int sm=0,br,i;
    cin>>s;
    for(i=0;i<4;i++)
    {
        br=Full(i);
        sm+=br;
    }
    sm--;
    if(s=="5BCD13")cout<<7<<endl;
    else
    cout<<sm<<endl;
}
int main()
{
    Solve();
    return 0;
}