import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int l = sc.nextInt();
        int n = sc.nextInt();
        int[] w = new int[n];
        for (int i = 0; i != n; i++) {
            w[i] = sc.nextInt();
        }
        sc.close();
        Arrays.sort(w);
        int cnt = 0;
        int sum = 0;
        for (cnt = 0; cnt < n && sum <= l; cnt++) {
            sum += w[cnt];
        }
        if (sum > l) {
            cnt--;
        }
        System.out.println(cnt);

    }
}