using System;
using System.Linq;

namespace No5
{
    class Program
    {
        static void Main(string[] args)
        {
            var L = int.Parse(Console.ReadLine());
            var N = int.Parse(Console.ReadLine());
            var Ws = Console.ReadLine().Split(' ').Select(i => int.Parse(i));

            var orderd = Ws.OrderBy(i => i).ToArray();

            var total = 0;
            var result = 0;
            foreach (var W in orderd)
            {
                total += W;
                if (total > L) break;
                result++;
            }

            Console.WriteLine(result);
        }
    }
}