import java.util.*;
import java.util.stream.*;

import static java.lang.Math.*;

public class Main {
    private void solve() {
        Scanner sc = new Scanner(System.in);
        int l = Integer.parseInt(sc.next());
        int n = Integer.parseInt(sc.next());
        sc.nextLine();
        List<Integer> sorted = Stream.of(sc.nextLine().split(" "))
                                     .map(Integer::valueOf)
                                     .sorted()
                                     .collect(Collectors.toList());
        int[] sums = IntStream.range(0, sorted.size())
                              .map(i -> sorted.subList(0, i+1)
                                              .stream()
                                              .reduce(0, (x, y) -> x + y))
                              .toArray();
        System.out.println(abs(Arrays.binarySearch(sums, l) + 1));
    }

    public static void main(String[] args) {
        new Main().solve();
    }
}