#include"bits/stdc++.h"

//#include<bits/stdc++.h>
using namespace std;
#define print(x) cout<<x<<endl;
#define rep(i,a,b) for(int i=a;i<b;i++)
#define REP(i,a) for(int i=0;i<a;i++)
typedef long long ll;
typedef pair<int, int> PI;
typedef pair<int, PI> V;
typedef vector<int> VE;
const ll mod = 100000000000;

using namespace std;

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,ans=0;
    REP(i,N){
      sum+=W[i];
      if(sum<=L) ans++;
      else break;
    }
    print(ans)
}