import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner koko = new Scanner(System.in);
        int l = koko.nextInt();
        int n = koko.nextInt();
        int[] w = new int[n];
        for(int i=0; i<n; i++){
            w[i] = koko.nextInt();
        }
        Arrays.sort(w);
        int wir = l;
        int count = 0;
        for(int i=0; i<n;i++){
            if(wir>=w[i]){
                wir = wir - w[i];
                count++;
            }else{
                break;
            }
        }
        System.out.println(count);
        
    }
}