import java.io.*;
import java.lang.reflect.Array;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Scanner;
 
public class Main {
    public static void main (String[] args) throws IOException
    {
    	Scanner sc = new Scanner(System.in);
    
    	int L = sc.nextInt();
    	int N = sc.nextInt();
    	
    	int W[] = new int [N];
    	
    	for (int i = 0 ; i <= N-1 ; i++){
    		W[i] = sc.nextInt();
    	}
    	
    	Arrays.sort(W);
    	
    	int sum = 0;
    	int ans = 0;
    	for (int j = 0; sum + W[j] <= L ; j++){
    		ans = ans + 1;
    		sum = sum + W[j];
    	}
    	
    	System.out.println(ans);
    }
}