using System;

using System.Globalization;

public class Program

{

    public static void Main()

    {

        var textInfo = new CultureInfo("en-GB",false).TextInfo;

        var input = "UK rules USA sucks";

        // With 'ToLower'()

        Console.WriteLine(textInfo.ToTitleCase(input.ToLower()));

        // Without 'ToLower()

        Console.WriteLine(textInfo.ToTitleCase(input));

    }

}