#include <bits/stdc++.h>
#include <iostream>
#include <string>
#include <vector>

using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)
typedef long long ll;

int main(){
  int l,n;
  cin >> l >> n;
  vector<int> w(n);
  rep(i,n){
    cin >> w[i];
  }
  sort(w.begin(),w.end());
  int sum = 0;
  int count = 0;
  rep(i,n){
    sum += w[i];
    if(sum <= l)count++;
    else break;
  }
  cout << count << endl;
}