#include <stdio.h>
#include <bits/stdc++.h>
#include <atcoder/all>
using namespace atcoder;
using mint = modint998244353;
using namespace std;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf 1000000001

int main(){
	int l,n;
	cin>>l>>n;
	
	vector<int> w(n);
	rep(i,n)cin>>w[i];
	
	sort(w.begin(),w.end());
	int ans = 0;
	rep(i,n){
		if(w[i]<=l){
			l -= w[i];
			ans++;
		}
	}
	
	cout<<ans<<endl;
	
	return 0;
}