#include <bits/stdc++.h>
#define INF 2000000000000000000
#define ll long long
#define pll pair<ll, ll>
using namespace std;

int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  ll L, N;
  cin >> L >> N;
  vector<ll> W(N);
  for (ll i = 0; i < N; ++i) {
    cin >> W.at(i);
  }
  sort(W.begin(), W.end());
  ll sum = 0;
  for (ll i = 0; i < N; ++i) {
    sum += W.at(i);
    if (sum > L) {
      cout << i << "\n";
      return 0;
    }
  }
  cout << N << "\n";
}