#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (n); i++)

int main(void){
    int l,n,ans = 0;
    cin >> l >> n;
    vector<int> w(n);
    rep(i,n) cin >> w[i];

    sort(w.begin(),w.end());

    rep(i,n){
        if(l >= w[i]){
            ans++;
            l -= w[i];
        }
    }

    cout << ans << endl;

    return 0;
}