ec

#include <iostream>
using namespace std;
int main ()
{
    int n, nx, c, p=1, p2=1, t=0;
    cin>>n;
    nx=n;
    while (nx!=0)
    {
        c=n-nx%10*p;
        nx=nx/10;
        p=p*10;
        while (c!=0)
        {
            if (c%10!=0)
            {
                t=t+c%10*p2;
                p2=p2*10;
            }
            c=c/10;
        }
    }
    cout<<t<<" ";
    return 0;
}