using System;

public class Program

{

    public static void Main()

    {

        try

        {

            int a=0,b=0,c=5;

            a=c/b;

        Console.WriteLine(a);

        }

        catch(DivideByZeroException ee)

        {

        Console.WriteLine("bb");

        }

        catch(Exception e)

        {

        Console.WriteLine("aa");

        }

    }

}