using System;
using System.Text.RegularExpressions;

public class Program
{
    public static void Main()
    {
        string input1 = "Hello \n World";
        string input2 = "Hello World";
        
        string norm1 = Normalize(input1);
        string norm2 = Normalize(input2);
        
        Console.WriteLine($"Input 1: '{input1}' -> Normalized: '{norm1}'");
        Console.WriteLine($"Input 2: '{input2}' -> Normalized: '{norm2}'");
        Console.WriteLine($"Match: {norm1 == norm2}");
    }

    public static string Normalize(string input)
    {
        if (string.IsNullOrWhiteSpace(input)) return string.Empty;
        var normalized = Regex.Replace(input.Trim(), @"\s+", " ");
        return normalized.ToLowerInvariant();
    }
}