#define _GLIBCXX_DEBUG
#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[i];
  }
  sort(W.begin(), W.end());
  int ans = 0;
  while(true){
    if(W[ans] <= L){
      L -= W[ans];
      ans++;
    }else{
      break;
    }
    if(ans == N) break;
  }
  cout << ans << endl;
}