import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;

public class Tester2 {
	public static void main(String[] args){
		try(BufferedReader br = new BufferedReader(new InputStreamReader(System.in))){
			int l = Integer.parseInt(br.readLine());
			int n = Integer.parseInt(br.readLine());
			String[] ary = br.readLine().split(" ");
			int[] b = chgInt(ary);

			int num=0,cnt=0;
			for(int i=0; i<b.length; i++) {
				num += b[i];
				if(num<=l) {
					cnt++;
				}else {
					break;
				}
			}
			System.out.println(cnt);

		}catch(IOException e) {
			e.printStackTrace();
		}
	}
	static int[] sort(int[] ary) {
		Arrays.sort(ary);
		return ary;
	}
	static int[] chgInt(String[] ary) {
		int[] a = new int[ary.length];
		for(int i=0; i<ary.length; i++) {
			a[i] = Integer.parseInt(ary[i]);
		}
		return sort(a);
	}

}