using System;  

public class Exercise22  

{  

    public static void Main()

{

    int i,j,n,p,q;

   Console.Write("Hector L. Galvan Sandoval");

    Console.Write("\n\n");

    Console.Write("Print the Floyd's Triangle:\n");

    Console.Write("-----------------------------");

    Console.Write("\n\n");     

   Console.Write("Input number of rows : ");

   n= Convert.ToInt32(Console.ReadLine());     

   for(i=1;i<=n;i++)

   {

     if(i%2==0)

     { p=1;q=0;}

     else

     { p=0;q=1;}

      for(j=1;j<=i;j++)

     if(j%2==0)

        Console.Write("{0}",p);

     else

        Console.Write("{0}",q);

     Console.Write("\n");

   }

  } 

}