//yukicoder 156 "キャンディー・ボックス"
//http://yukicoder.me/problems/307
#include <bits/stdc++.h>
using namespace std;

long c[10];
int minarray;

int main() {
	int n, m, sum = 0;
	cin >> n >> m;
	for (int i = 0; i < n; i++) {
		cin >> c[i];
	}
	sort(c, c + n);
	for (int i = 0; i < n; i++) {
		while (sum < m) {
			sum++;
			c[i]--;
			if (c[i] == 0) break;
		}
	}
	int ans = 0;
	for (int i = 0; i < n; i++) {
		if (c[i] == 0) ans++;
	}
	cout << ans << endl;
	return 0;
}