using System;
using System.Linq;

public class Test
{
    static string makePascal(string identifier)
    {
        var parts = identifier.Split('_');
        var pascalCasedParts = parts.Select(p => p[0] + new string(p.ToLower().Skip(1).ToArray()));
        var pascalIdent = string.Join("", pascalCasedParts.ToArray());
        return pascalIdent;
    }
    public static void Main()
    {
        Console.WriteLine(makePascal("SOMETHING_COOL"));
        Console.WriteLine(makePascal("SOMETHING_LESS_COOL"));
        Console.WriteLine(makePascal("WHATEV"));
    }
}