using System;

public class Program

{

    public static void Main()

    {   

        var bankName = "Citi Bank EUR";

        if (IsCitiBank(bankName)){

            Console.WriteLine("Citi Bank!");

        }       

        else{

            Console.WriteLine("Not Citi Bank!");

        }

    }

    private static bool IsCitiBank(string bankName){

        const string citiBank = "CITIBANK";

        var processedBankName = bankName.Replace(" ", string.Empty).ToUpper();

        return processedBankName.Contains(citiBank);

    }

}