#include <bits/stdc++.h>
using namespace std;
typedef unsigned long long ul;
typedef signed long long ll;
ul over = 1000000007;

int main(void)
{
  cin.tie(0);
  ios::sync_with_stdio(false);
  cout << fixed;
  ll l, n;
  cin >> l >> n;
  ll w[n];
  for (ll i = 0; i < n; ++i) cin >> w[i];
  sort(w, w+n);
  ll ans = 0;
  for (ll i = 0, block = 0; block + w[i] <= l; ++i) {
    ans++; block+=w[i];
  }
  cout << ans << endl;
  return 0;
}