using System;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;

public class Test
{
	public static void Main()
	{
		var inputString = "ñaáme";
		var result = string.Concat(Regex.Replace(inputString, @"(?i)[\p{L}-[ña-z]]+", m => 
				m.Value.Normalize(NormalizationForm.FormD)
			)
			.Where(c => CharUnicodeInfo.GetUnicodeCategory(c) != UnicodeCategory.NonSpacingMark));
		Console.Write(result);
	}
}