using System;

public class Program

{

    public static void Main()

    {

        Func<string,bool> f = 

            s=>1>s.Split("aeiouAEIOU".ToCharArray()).Length%2;

        Console.WriteLine(f("trees"));

        Console.WriteLine(f("brush"));

        Console.WriteLine(f("CAts"));

        Console.WriteLine(f("Savoie"));

        Console.WriteLine(f("rhythm"));

​

    }

}