using System;
public class Test
{
public static void Main()
{
string plainText = System.Text.Encoding.GetEncoding("utf-8").GetString(Convert.FromBase64String("aGVsbG8gaXRoZWxw"));
Console.WriteLine(plainText);
}
}
dXNpbmcgU3lzdGVtOwoKcHVibGljIGNsYXNzIFRlc3QKewoJcHVibGljIHN0YXRpYyB2b2lkIE1haW4oKQoJewoJCXN0cmluZyBwbGFpblRleHQgPSBTeXN0ZW0uVGV4dC5FbmNvZGluZy5HZXRFbmNvZGluZygidXRmLTgiKS5HZXRTdHJpbmcoQ29udmVydC5Gcm9tQmFzZTY0U3RyaW5nKCJhR1ZzYkc4Z2FYUm9aV3h3IikpOwoJCUNvbnNvbGUuV3JpdGVMaW5lKHBsYWluVGV4dCk7Cgl9Cn0=