import java.util.Arrays;
import java.util.Scanner;

public class Main {
	private int n;
	private int l;
	private int[] w;
	
	Main(){
		this.w = new int[10010];
	}
	
	public void setN(int n){
		this.n = n;
	}
	
	public void setL(int l){
		this.l = l;
	}
	
	public void setW(int i,int num){
		this.w[i] = num;
	}
	
	public int run(){
		int ans = 0;
		Arrays.sort(w, 0, this.n);
		int last = this.l;
		for(int i = 0;i < this.n;i++){
			if(last - w[i] >= 0){
				last -= w[i];
				ans++;
			}
		}
		return ans;
	}
	
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		Main m = new Main();
		int l = sc.nextInt();
		int n = sc.nextInt();
		int w;
		m.setN(n);
		m.setL(l);
		for(int i = 0;i < n;i++){
			w = sc.nextInt();
			m.setW(i, w);
		}
		System.out.println(m.run());
	}
}