using System;
using System.Text.RegularExpressions;
public class Test
{
public static void Main()
{
string s = "protected void Page_Load(object sender, EventArgs e)\n{\n\tResponse.Write(\"Hello World\");\n}";
Regex regex = new Regex(@"^\t+", RegexOptions.Multiline);
s = regex.Replace(s, m => new string('*', 4 * m.Value.Length));
Console.WriteLine(s);
}
}
dXNpbmcgU3lzdGVtOwp1c2luZyBTeXN0ZW0uVGV4dC5SZWd1bGFyRXhwcmVzc2lvbnM7CgpwdWJsaWMgY2xhc3MgVGVzdAp7CglwdWJsaWMgc3RhdGljIHZvaWQgTWFpbigpCgl7CgkJc3RyaW5nIHMgPSAicHJvdGVjdGVkIHZvaWQgUGFnZV9Mb2FkKG9iamVjdCBzZW5kZXIsIEV2ZW50QXJncyBlKVxue1xuXHRSZXNwb25zZS5Xcml0ZShcIkhlbGxvIFdvcmxkXCIpO1xufSI7CgkJUmVnZXggcmVnZXggPSBuZXcgUmVnZXgoQCJeXHQrIiwgUmVnZXhPcHRpb25zLk11bHRpbGluZSk7CgkJcyA9IHJlZ2V4LlJlcGxhY2UocywgbSA9PiBuZXcgc3RyaW5nKCcqJywgNCAqIG0uVmFsdWUuTGVuZ3RoKSk7CgkJQ29uc29sZS5Xcml0ZUxpbmUocyk7Cgl9Cn0=