import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Scanner;

public class Main {
	int L, N;
	int[] W = new int[10000];
	
	public static void main(String[] args) {
		Main task = new Main();
		task.input();
		task.solve();
	}
	
	void input() {
		Scanner in = new Scanner(System.in);
		L = in.nextInt();
		N = in.nextInt();
		for (int i = 0; i < N; i++) {
			W[i] = Integer.parseInt(in.next());
		}
	}
	
	void solve() {
		Arrays.sort(W, 0, N);
		int sum = 0;
		int cnt = 0;
		for (int i = 0; i < N; i++) {
			sum += W[i];
			cnt++;
			if (sum > L) {
				sum -= W[i];
				cnt--;
				break;
			}
		}
		System.out.println(cnt);
	}
}