#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using ll=long long;
using vll=vector<ll>;
using pll=pair<ll,ll>;


int main()
{
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
    ll L,N;
    cin>>L>>N;
    vll w(N+1);
    for(int i=1;i<=N;++i)cin>>w[i];
    sort(w.begin()+1,w.end());
    ll cur=0,ans=0;
    for(int i=1;i<=N;++i){
        if(cur+w[i]>L)break;
        else cur+=w[i],ans++;
    }
    cout<<ans<<endl;
}