using System;
class Myclass
{
 static void Main()
 {
  string name="lengmianren";
  int password=3123486;
  int i=4;
  Found :
  Console.WriteLine("Please input your name:");
  string Name=Console.ReadLine();
  Console.WriteLine("Please input your password:");
  int Password=int.Parse(Console.ReadLine());
  if(Name==name&Password==password)
  {
   Console.WriteLine("Welcome to bingfengguzhu's index.");
  }
  else
  {
   i--;
   if(i>=1)
   {
    Console.WriteLine("Sorry,your input is wrong,please input again,but you have only "+i+" chance.");
    goto Found;
   }
   else
   {
    Console.WriteLine("想进来。^-^");
   }
  }
  System.Threading.Thread.Sleep(3000);
 }
}