#include <bits/stdc++.h>
using namespace std;
#define int long long
#define rep(i,j)  for(int i=0; i<j; i++)
#define vi vector<int>
#define vvi vector<vector<int>>
#define sr(a) sort(a.begin(),a.end())

signed main(){
  int l,n; cin>>l>>n;
  vi w(n);
  rep(i,n) cin>>w[i];
  sr(w);
  int sum=0; int ans=0; int d=0;
  while(sum+w[d]<=l||d==n){
    ans++;
    sum+=w[d];
    d++;
  }
  cout<<ans<<endl;
}