using System;
using System.Collections.Generic;
using System.Linq;

namespace lecture
{
    class MainClass
    {
        public 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];
                //一回目のループ　sum -> W[0]
                //二回目のループ　sum -> W[0] + W[1]
                //三回目のループ　sum -> W[0] + W[1]+W[2]
                //四回目のループ　sum -> W[0] + W[1]+W[2]+[3]
                if (L < sum){
                    break;

                }
                count++;
            }

            Console.WriteLine(count);


        }
    }
}