using System;
using System.Text.RegularExpressions;
public class Test
{
public static void Main()
{
string escaped = @"Hello\thello\nWorld!";
string res = Regex.Unescape(escaped);
Console.WriteLine(res);
}
}
dXNpbmcgU3lzdGVtOwp1c2luZyBTeXN0ZW0uVGV4dC5SZWd1bGFyRXhwcmVzc2lvbnM7CgoKcHVibGljIGNsYXNzIFRlc3QKewoJcHVibGljIHN0YXRpYyB2b2lkIE1haW4oKQoJewoJCXN0cmluZyBlc2NhcGVkID0gQCJIZWxsb1x0aGVsbG9cbldvcmxkISI7CgkJc3RyaW5nIHJlcyA9IFJlZ2V4LlVuZXNjYXBlKGVzY2FwZWQpOwoJCUNvbnNvbGUuV3JpdGVMaW5lKHJlcyk7Cgl9Cn0=