using System;
using System.Collections.Generic;
using System.Text;

public class Program
{
    public void Proc(){
        
        Reader.IsDebug = false;
        
        int boxWidth = int.Parse(Reader.ReadLine());
        
        int blockCount = int.Parse(Reader.ReadLine());
        
        List<int> boxList = new List<int>();
        boxList.AddRange(Reader.GetInt());
        boxList.Sort();
        
        int totalWidth = 0;
        int ans = 0;
        
        foreach (int blockWidth in boxList)
        {
            if(totalWidth + blockWidth <= boxWidth) {
                totalWidth += blockWidth;
                ans++;
            } else
            {
                 break;
            }
        }
        
        Console.WriteLine(ans);

    }

    public static void Main(string[] args)
    {
        Program prg = new Program();
        prg.Proc();
    }
}

class Reader
{
    public static bool IsDebug = true;
    
    private static System.IO.StringReader sr;
    
    public static string ReadLine() {
        if(IsDebug) {
            if(sr == null) {
                sr = new System.IO.StringReader(initStr.Trim());
            }
            return sr.ReadLine();
        } else {
            return Console.ReadLine();
        }
    }
    
    public static int[] GetInt(char delimiter = ' ') {
        string[] inpt = ReadLine().Split(delimiter);
        int[] ret = new int[inpt.Length];
        for(int i=0; i<inpt.Length; i++) {
            ret[i] = int.Parse(inpt[i]);
        }
        return ret;
    }
    
    private static string initStr = @"


100
10
14 85 77 26 50 45 66 79 10 3


    ";
}