using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("");

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

​

for (int row = 1; row <= n; row++) 

​

{ 

​

          for (int col = 1; col <= row; col++) 

​

          { 

​

                   Console.Write(col + " "); 

​

          } 

​

          Console.WriteLine(); 

​

}  

    }

}