using System;
//Write a program that enters from the console a positive integer n and prints all the numbers from 1 to n, on a single line, separated by a space. 
class NumbersOneToN
{
    static void Main()
    {
        Console.Write("Please enter a number: ");
        int n = int.Parse(Console.ReadLine());
        for (int i = 1;i<=n;i++)
        {
            Console.Write(i);
            if(i<n)
            {
                Console.Write(" ");
            }
        }
        Console.WriteLine();
    }
}