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

namespace yukicoder5
{
    class Program
    {
        static void Main(string[] args)
        {
            int l = int.Parse(Console.ReadLine());
            int n = int.Parse(Console.ReadLine());
            string[] s = Console.ReadLine().Split(' ');
            int[] w = new int[s.Length];

            for (int i = 0; i < n; i++)
            {
                w[i] = int.Parse(s[i]);
            }

            Array.Sort(w);
            int sum = 0;
            int cnt = 0;
            for (int i = 0; i < n; i++)
            {
                sum += w[i];
                if (l >= sum)
                {
                    cnt++;
                }
                else
                {
                    break;
                }
            }
            Console.WriteLine(cnt);
        }
    }
}