import java.util.Scanner;
import java.util.Arrays;

class Block{
	public static void main(String args[]){
		Scanner s = new Scanner(System.in);
		int L = s.nextInt();
		int N = s.nextInt();
		int W[] = new int[N];
		for(int i = 0; i < N; i++){
			W[i] = s.nextInt();
		}
		Arrays.sort(W);
		
		int sum = 0;
		int j = 0;
		while(sum <= L){
			sum += W[j];
			j++;
		}
		System.out.println(j-1);
	}
}