_5,XII,2018

#include <iostream>

using namespace std;

int main()
{

  int x,i,S,cx,k=0;

  do
  {
      cin>>x;
      if (x!=0) {
      cx=x;
      i=2;
      S=0;
      do
      {
          if (cx%i==0)
            S+=cx%10;
          cx/=10;

      } while (i<=cx/2);

      if (x==S) {
         k++;
       cout<<"DA"<<endl;
}
      else
        cout<<"NU"<<endl;
      }
  } while (x!=0);

cout<<"k="<<k;
return 0;
}