using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace lecture
{
    class Program
    {

        static void Main(string[] args)
        {
            int L = int.Parse(Console.ReadLine());
            int N = int.Parse(Console.ReadLine());
            int[] W = Console.ReadLine().Trim().Split(' ').Select(x => int.Parse(x)).ToArray();
            Array.Sort(W);
            int sum = 0;
            int count = 0;
            
            for (int i = 0; i < N; i++) 
            {
                sum += W[i];
                if (sum > L) 
                {
                    break;
                }
                count++;
            }
            Console.WriteLine(count);
        }
    }
}