#include <fstream.h>
ifstream fin("invers.in");
ofstream fout("invers.out");
void main()
{long n,x[100];
fin>>n;
for(i=1;i<=n;i++)
 {fin>>x[i];
  y=x[i]
  while(y!=0)
     {inv=inv*10+(y%10);
      y=/10;}
  y=inv+x[i];
  if(x[i]==y)
           fout<<"DA"<<'\n';
         else
           fout<<"NU"<<'\n';}
fin.close()
}