Problema J

#include <iostream>

using namespace std;

int main()
{
    int n,a,r,x;

    a=11;
    while(n!=0)
    {


        while(r!=1)
        {
            cin>>n;
            x=n*a;
            if((n%10)+(n%100)/10+(n%1000)/100+(n%10000)/1000+(n%100000)/10000 == (x%10)+(x%100)/10+(x%1000)/100+(x%10000)/1000+(x%100000)/10000)
            {

                cout<<a<<endl;
                r=1;
            }
            else
            {
                a=a+1;
            }
        }
        r=0;

    }

    return 0;
}