print("Welcome to the KriNe nuclear system.\r\nWARNING: This is not a joke.");
print("Enter the keycode to activate: ");

sRealPassword = "nexusrocks";
sSymbol = "*";

sInput = read(sSymbol);
if (sRealPassword == sInput) then
    print("Nuclear system activated. Count down has begun. Find a shelter.");
    for i=0, 10 do
        print(10-i);
        sleep(1)
    end
    print("Launched");
    redstone.setOutput("left", true);
    sleep(5);
    redstone.setOutput("left", false);
    os.reboot();
else
    print("Incorrect keycode.");
    os.reboot();
end