using System;
using System.Numerics;
using System.Linq;
using System.Collections.Generic;
using System.Text;
using System.Collections;

namespace debug
{
    class main
    {
        static void Main(string[] args)
        {
            //問題クラスを展開
            ProgramC a = new ProgramC();
            a.main();//実行する

        }

    }

    //ABC123
    class ProgramA
    {
        public void main()
        {
            //入力
            int[] antena = new int[5];
            for(int i = 0; i < 5;i++)
                antena[i] =int.Parse(Console.ReadLine());

            int k = int.Parse(Console.ReadLine());
            
            for(int i = 0;i < 5;i++)
                for (int j = i + 1; j < 5; j++)
                {
                    if(Math.Abs(antena[i] - antena[j]) > k)
                    {
                        Console.WriteLine(":(");
                        return;
                    }
                }

            Console.WriteLine("Yay!");

        }
    }

    class ProgramB
    {
        public void main()
        {
            //入力
            int[] food = new int[5];
            int[] one = new int[5];
            for (int i = 0; i < 5; i++)
            {
                string s = Console.ReadLine();
                food[i] = int.Parse(s);
                one[i] = s[s.Length -1]  - '0';
            }

            int flag = 5;
            int t = 10;
            for (int i = 0; i < 5; i++)
            {
                if (one[i] == 0)
                    continue;
                if(one[i] < t)
                {
                    t = one[i];
                    flag = i;
                }
            }

            int ans = 0;
            for (int i = 0; i < 5; i++)
            {
                if (i == flag || one[i] == 0)
                    ans += food[i];
                else
                    ans += food[i] - one[i] + 10;

            }
            Console.WriteLine(ans);
        }

        
    }

    class ProgramC
    {
        public void main()
        {

            //入力
            long n= long.Parse(Console.ReadLine());
            long[] way = new long[5];
            for (int i = 0; i < 5; i++)
                way[i] = long.Parse(Console.ReadLine());

            Array.Sort(way);

            if(n % way[0] == 0)
                Console.WriteLine(n/way[0] + 4);
            else
                Console.WriteLine(n / way[0] + 5);
        }


    }



    class ProgramD
    {
        public void main()
        {

            //入力
            int n = int.Parse(Console.ReadLine());

            List<int> a = new List<int>(10000);

            for (int i = 0; i < 10000; i++)
                a.Add(i + 2);

            //10000までの素数を出す
            for(int i = 2;i <= Math.Sqrt(10000);i++)
            {
                List<int> t = new List<int>(10000);
                foreach (var s in a)
                {
                    if (s % i == 0 && s / i != 1)
                        t.Add(s);
                }

                foreach (var s in t)
                {
                    a.Remove(s);
                }


            }

            //5で割ったあまりが1だけのものを出す
            int count = 0;
            foreach (var s in a)
            {
                if (s % 5 == 1)
                {
                    Console.Write(s + " ");
                    count++;
                }

                if (count == n)
                    break;
            }
            
        }
    }

    


}






Measured memory_bytes: 27528