#include<cstdio>
#include<algorithm>
#include<fstream>
#define FOR for(i=1;i<=n;i++)
using namespace std;
ifstream f("invers.in");
ofstream g("invers.out");
long int invers(long int x)
{	
	long int nr=0;
	while(x!=0)
	{	
		nr=nr*10+x%10;
		x=x/10;
	}
	return nr;
}
long int n;
int t;
short ok;
int i;
int main()
{	
	f>>n;
	FOR
	{	
		ok=0;
		f>>t;
		for(long int j=1;j<=t;j++)
			if(j+invers(j)==n)
			{	
				g<<"DA"<<"\n";
				ok=1;
				break;
			}
		if(ok!=1)
			g<<"NU"<<"\n";	
	}
	return 0;
}