#include <bits/stdc++.h>
#define FOR(i,a,b) for (int i=(a);i<(b);i++)
#define FORR(i,a,b) for (int i=(a);i>=(b);i--)
#define pb push_back

using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef set<int> si;
const int inf = 1e9;
const int mod = 1e9+7;

int l, n, w[10000];
main(){
  cin.tie(0);
  ios::sync_with_stdio(false);
  cin >> l >> n;
  FOR(i, 0, n)cin >> w[i];
  sort(w, w+n);
  int ans = n;
  FOR(i, 0, n){
    if(w[i] > l){
      ans = i;
      break;
    }
    l -= w[i];
  }
  cout << ans << endl;
}