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#include <iostream>
using namespace std;
int coin[10001] = { 0 };
int main(void)
{
	int n, a, num;
	cin >> n;
	for (int t = 0; t < n; t++) {
		fill_n(coin, 10000, 0);
		cin >> a;
		int *q = new int[a];
		for (int i = 0; i < a; i++) {
			cin >> q[i];
		}
		cin >> num;
		for (int i = 0; i <= num; i++) {
			if (i%q[0] == 0)
				coin[i]++;
		}
		for (int i = 1; i < a; i++) {
			for (int t = q[i]; t <= num; t++) {
				coin[t] += coin[t - q[i]];
			}
		}
		cout << coin[num] << endl;
	}
	return 0;
}