#include <bits/stdc++.h>
using namespace std;

int main() {
  int L, N;
  cin >> L >> N;
  vector<int> W(N);
  for (int i = 0; i < N; i++) cin >> W.at(i);
  sort(W.begin(), W.end());

  int sum = 0, cnt = 0;
  for (int i = 0; i < N; i++) {
    if (sum + W.at(i) > L) break;
    sum += W.at(i), cnt++;
  }

  cout << cnt << "\n";
}