namespace ConsoleApp21
{//Luz Hdez
class Program
{
static void Main(string[] args)
{
string a = "█";
string sign;
Console.Write(a);
sign =Console.ReadLine();
while (sign == "+")
{
a = a + "█";
Console.Write(a);
sign = Console.ReadLine();
}
while (sign == "-")
{
a = a.Remove(a.Length - 1);
Console.Write(a);
sign= Console.ReadLine();
}
}
}
}