#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 dp[n];
	dp[0] = v[0];
	for(int i = 1;i<n;i++){
		dp[i] = dp[i-1] + v[i]; 
	}

	for(int i = 0;i<n;i++){
		if(dp[i] > l){
			cout << i;
			return 0;
		}
		else if(dp[i] == l){
			cout << i+1;
			return 0;
		}
	}
	cout << n;
	return 0;
}