#include<stdio.h>
#define dim 100

long cont;
long u,n,t,nr,i;

void citire();
void afisare();

int main()
{
	freopen("amlei.in","r",stdin);
	freopen("amlei.out","w",stdout);

	citire();
	afisare();
	return 0;
}

void citire()
{

	while(scanf("%ld%ld%ld",&n,&t,&u) && n)
	{
		for(i=1;i<=n*t;i++)
			scanf("%ld",&nr);
		for(i=1;i<=n*u;i++)
			scanf("%ld",&nr);
		cont++;
		n=0;
	}
}

void afisare()
{
	for(int i=1;i<=cont;i++)
	{
		if(i%2==0)
			printf("DA\n");
		else
			printf("NU\n");
	}

}