#include <fstream>
#include <vector>
#include <string>
#include <algorithm>

using namespace std;

int t,n,m,x,y,i;
vector<string> v;

int calc (){
	return min(min(n-x,x-1),min(m-y,y-1));}

int main ()
{
	v.push_back("DA");
	v.push_back("NU");
	ifstream in ("chatnoir.in");
	ofstream out ("chatnoir.out");
	for(in>>t;t;--t)
	{
		in>>n>>m>>x>>y;
		int dist=calc();
		if(dist<4)
			i=0;
		else
			i=1;
		out<<v[i]<<"\n";
	}	
	return 0;
}