import java.util.*;
class Yukico5 {
	public static void main(String[] args){
		Scanner stdin = new Scanner(System.in);
		int l = stdin.nextInt();
		int n = stdin.nextInt();
		int[] w = new int[n];
		for(int i=0; i<n; i++) {
			w[i] = stdin.nextInt();
		}
		Arrays.sort(w);
		
		int a=0;
		int i=0;
		while(a<=l && i<n) {
			a = a+w[i];
			i++;
		}
		if(i==n && a<=l) {
			System.out.println(i);
		} else {
			System.out.println(i-1);
		}
	}
}