import java.util.*;

class Yuki5{
	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 k=0;
		int sum = 0;
		while(sum<=l){
			sum+=w[k];
			k++;
			if(k==n&&sum<=l){
				k++;
				break;
			}else if(k==n)
				break;
		}
		System.out.println(k-1);
	}
}