#include <iostream>
#include <fstream>
using namespace std;
int inv(int n, int o)
{  if ( n == 0 )
       return o;
   else
       return inv(n/10,o*10+n%10);
}
int main()
{
ifstream a1("invers.in.txt");
ofstream a2("invers.out.txt");
int n,t,i,j,a;
a1 >> t;
for(j=0;j<t;j++)
{
i=0;
a1 >> n;
while(i<=n)
{
	a=inv(i,0);
	if((a+i)==n)
	{
	a2 << "DA" << endl;
	break;
    }
    i++;
}
if(i>n)
{
a2 << "NU" << endl;
}
}
a1.close();
a2.close();
return 0;
}