#include<fstream.h>

int t,n,a[100],i,e,x;

int main()
{  ifstream fin("invers.in");
   ofstream fout("invers.out");
   fin>>t;
   for(i=1;i<=t;i++)
   {    fin>>n;
		e=0;
		if(n%10==0) fout<<"DA\n";
		x=n;
		while(x)
		{ a[++e]=x%10;
		  x/=10;
		}
		if(n==1) fout<<"NU\n";
			else
				if(a[1]>a[e]) fout<<"NU\n";
							else fout<<"DA\n";
   }
   fin.close();
   fout.close();
   return 0;
}