#include<stdio.h>
int T,Nr[10001],i,x,r;
int main()
{
        freopen("invers.in","r",stdin);   
        freopen("invers.out","w",stdout);  
	scanf("%d",&T);
	for(i=1;i<=T;i++)
	{ 
		scanf("%d",&Nr[i]);
	}
	for(i=1;i<=T;i++)
	{
		while(Nr[i]!=0)
		{
			r=Nr[i]%10;
			Nr[i]=Nr[i]/10;
			x=r*10;
		}
		if(Nr[i]=Nr[i]+x)
		{
			printf("DA");
                        printf("\n");
		}
		else
		{
			printf("NU ");
                        printf("\n");
		}
	}
        fclose(stdin);
        fclose(stdout);
	return 0;
}