#include <iostream>
#include <string>
using namespace std;

int main() {
	int i, j;
	int n, k, temp;
	int v[101] = { 0 };
	int dp[10001] = { 0 };

	cin >> n >> k;

	for (i = 1; i <= n; i++) {
		cin >> v[i];
	}

	memset(dp, -1, sizeof(dp));

	dp[0] = 0;

	for (i = 1; i <= n; i++) {
		for (j = 0; j <= k; j++) {
			if (j >= v[i] && dp[j-v[i]]!= -1) {
				temp = dp[j - v[i]] + 1;
				if (dp[j] == -1 || temp < dp[j]) {
					dp[j] = temp;
				}
			}
		}
	}
	cout << dp[k] << '\n';


	return 0;
}