#include <bits/stdc++.h>
#define rep(i, a, n) for (int i = a; i < n; i++)
#define repr(i, a, n) for (int i = n - 1; i >= a; i--)
using namespace std;
using ll = long long;
using P = pair<int, int>;

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);

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