#include<stdio.h>
long n,s[100001],ant,num,i,t,u;
char c;
int main()
{
	freopen ("amlei.in","rt",stdin);
	freopen ("amlei.out","wt",stdout);
	c=1;
	ant=1;
	while (c!='\n')
	{
		scanf ("%d %d %d\n",&n,&t,&u);
		if (n==0 && t==0 && u==0)
			break;
		for (i=1;i<=n*t;i++)
			scanf("%d",&s[i]);
		for (i=1;i<=n*u;i++)
			scanf("%d",&s[i]);
		num++;
		n=t=u=0;
	}
	for (i=1;i<=num-1;i++)
		printf("NU\n");
	printf("DA\n");
	return 0;
}