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

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() );
  for( int i = 0, s = 0; i < N; ++i )
    if( ( s += W[ i ] ) > L )
      cout << i << endl,
      exit( 0 );
  cout << N << endl;
  return 0;
}