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

class Program
{
    //Constで定義すると警告が出るので、変数として定義
    static string InputPattern = "Input3";

    static List<string> GetInputList()
    {
        var WillReturn = new List<string>();

        if (InputPattern == "Input1") {
            WillReturn.Add("16");
            WillReturn.Add("3");
            WillReturn.Add("10 5 7");
        }
        else if (InputPattern == "Input2") {
            WillReturn.Add("100");
            WillReturn.Add("10");
            WillReturn.Add("14 85 77 26 50 45 66 79 10 3");
        }
        else {
            string wkStr;
            while ((wkStr = Console.ReadLine()) != null) WillReturn.Add(wkStr);
        }
        return WillReturn;
    }

    static void Main()
    {
        List<string> InputList = GetInputList();

        int L = int.Parse(InputList[0]);
        int[] WidthArr = InputList[2].Split(' ').Select(X => int.Parse(X)).ToArray();

        //貪欲法を使う
        Array.Sort(WidthArr);
        int AnswerCnt = 0;
        int WidthSum = 0;
        for (int I = 0; I <= WidthArr.GetUpperBound(0); I++) {
            if (WidthSum + WidthArr[I] <= L) {
                WidthSum += WidthArr[I];
                AnswerCnt++;
            }
            else break;
        }
        Console.WriteLine(AnswerCnt);
    }
}