codjoc

#include <fstream>
using namespace std;
ifstream fin("codjoc.in");
ofstream fout("codjoc.out");

long long int n,c,s,p=10;
int main()
{
    fin>> n;
    s=n;
    while(p<=n)
    {
        s=s+n%p;
        p=p*10;
    }
    fout<<s;

    return 0;
}