using System;
using System.Linq;

namespace Suuji_no_Block_CS
{
    class Program
    {
        static int Solve(int L, int[] W)
        {
            int ret=0;

            foreach(int x in W)
            {
                L -= x;
                if(L < 0)
                {
                    break;
                }
                ret++;
            }
            return ret;
        }

        static void Main(string[] args)
        {
            int L = int.Parse(Console.ReadLine());
            int N = int.Parse(Console.ReadLine());
            int[] W = Console.ReadLine().Split(' ').Select(value => int.Parse(value)).OrderBy(value => value).ToArray();

            Console.WriteLine(Solve(L, W));
        }
    }
}