using System;
using System.Linq;

namespace Problem_12._Random_Numbers_1_N
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());

            int[] arrA = new int[n];
            Random random = new Random();

            for (int i = 0; i <= arrA.Length - 1; i++)
            {
                int number = random.Next(1, n + 1);
                while (arrA.Any(n => n == number))
                {
                    number = random.Next(1, n + 1);
                }

                arrA[i] = number;
                Console.Write(arrA[i] + " ");
            }
            Console.ReadKey();
        }
    }
}