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

int main(){
	int l,n;
	cin>>l;
	cin>>n;
	int sum=0;
	vector<int> a(n);
	for (int i = 0; i < n; ++i) {
		cin>>a[i];
	}
	int count=0;
	sort(a.begin(),a.end());
	for (int j = 0; j < n; ++j) {
		if (sum+a[j]<=l) {
			sum+=a[j];
			count++;
		}else{
			cout<<count<<endl;
			return 0;
		}
	}
	cout<<count<<endl;
}