#include <bits/stdc++.h>
#define int long long
#define double long double
using namespace std;
const int MOD = 1000000007;
const int INF = 1e14;
using Graph = vector<vector<int>>;

signed 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 now = 0;
  for( int i = 0; i < N; i++ ){
    if( now+W[i] > L ){
      cout << i << endl;
      return 0;
    }
    now += W[i];
  }
  cout << N << endl;
}