import java.io.*;
import java.util.*;

public class Main {

    public static void main(String[] args) throws Exception {

        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

        int L = Integer.parseInt(br.readLine());
        int N = Integer.parseInt(br.readLine());

        String[] strW = br.readLine().split(" ");

        ArrayList<Integer> W = new ArrayList();

        int sum = 0;
        for (int i = 0; i < strW.length; i++) {
            W.add(Integer.parseInt(strW[i]));
        }

        W.sort(null);

        int i = 0;
        for (; i < W.size(); i++) {
            int tmpW = W.get(i);
            if (L >= tmpW) {
                L -= tmpW;
            } else {
                break;
            }
        }

        System.out.println(i);
    }
}