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

public class problem1 {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int L, N;
		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);

		int ans = 0;
		for (int i = 0; i < N; i++) {
			if (L >= W[i]) {
				L -= W[i];
				ans++;
			}
		}
		System.out.println(ans);
	}
}