using System;

​

public class Program

{

public static bool Function(char[] A)

{

bool b=true;

if(A.Length%2==0)

{

for(int i=0;i<A.Length/2;i++)

{

if(A[i]!=A[A.Length/2+i])

b=false;

}

return b;

}

else    

return false;

}

    public static void Main()

    {

char[] C=new char[10];

for(int i=0;i<C.Length;i++)

{

Console.WriteLine("enter a letter");

C[i]=char.Parse(Console.ReadLine());

}

Console.WriteLine(Function(C));

    }

}