#include <bits/stdc++.h>
using namespace std;

int main(){
	long long int n,m;
	cin >> n >> m;
	vector<long long int> data(n);
	for(auto &a:data) cin >> a;
	long long int check = 0;
	sort(data.begin(),data.end());
	while(m > 0){
		if(data[check] == 0) check++;
		data[check] -= 1;
		m--;
	}
	long long int count = 0;
	for(auto a:data) if(a == 0) count++;
	cout << count << endl;
	return 0;
}