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

public class No5 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int l, n, sum = 0, ans = 0;
        l = sc.nextInt();
        n = sc.nextInt();
        int[] w = new int[n];
        for (int i = 0; i < n; i++) {
            w[i] = sc.nextInt();
        }
        Arrays.sort(w);

        for (int i = 0; i < n; i++) {
            sum += w[i];
            if(sum > l){
                System.out.println(i);
                return;
            }
        }
        System.out.println(n);
    }
}