#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

ifstream fin("");
ofstream fout("");

int main() {
    int t;
    fin >> t;

    while (t--) {
        int n, m, k;
        fin >> n >> m >> k;

        vector<int> v(n);
        for (int i = 0; i < n; ++i)
            fin >> v[i];

        if (m % k != 0) {
            fout << "NU\n";
            continue;
        }

        for (int j = 0; j < k; ++j) {
            int i = n - 1;
            int s = 0;
            do {
                if (v[i] != -1) {
                    if (s + v[i] <= m / k) {
                        s += v[i];
                        v[i] = -1;
                    }
                }
                i--;
            } while (i >= 0 && s < m / k);
            if (s != m / k) {
                fout << "NU\n";
                goto next_case;
            }
        }

        fout << "DA\n";
        next_case:;
    }

    return 0;
}