#include<fstream>
using namespace std;
ifstream f("chatnoir.in");
ofstream g("chatnoir.out");

int x, y, m, n,t,i;

int main()
{
	f>>t;
	for(i=1; i<=t; i++)
	{
		f>>x>>y>>m>>n;
		
		if(m%2==0 && n%2==0)
			g<<"NU"<<"\n";
		else
			g<<"DA"<<"\n";
	}
}