#define _CRET_SECURE_NO_WARNINGS

#include<cstdio>
#include<fstream>
#include<algorithm>

using namespace std;
ifstream f("sate2.in");
ofstream g("sate2.out");


int main()
{
	int n, t, k, m, a[3001], c;
	f >> t;
	while (t)
	{
		f >> n >> m >> k;
		c = m / k;
		if (m % k)
		{
			g << "NU\n";
			--t;
			continue;
		}

		for (int i = 0; i < n; ++i)
			f >> a[i];
		sort(a, a + n);

		if (a[n - 1] > c || a[n - 2] > c)
		{
			g << "NU\n";
			--t;
			continue;
		}
		if (c % 2 != m % 2)
		{
			g << "NU\n";
			--t;
			continue;
		}
		g << "DA\n";
		--t;
	}
	


}