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

#define int long long
#define pb emplace_back
#define sz(v) (int)(v.size())
#define all(v) (v.begin(),v.end())

signed main(){
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	// freopen("input.txt","r",stdin);
	// freopen("output.txt","w",stdout);
	int l,n;
	cin >> l >> n;
	vector<int> v(n);
	for(int i = 0;i<n;i++){
		cin >> v[i];
	}
	sort(v.begin(),v.end());
	int ans = 0;
	int i = 0;
	while(ans + v[i] <= l){
		ans += v[i];
		i++;
	}
	cout << i;
	return 0;
}