int a = 2;
int b = 3;
int c = 4;
int d = 5;
int e = 6;
int f = 8;
int g = 7;

void setup() {
  Serial.begin(9600);
  pinMode(a, OUTPUT);
  pinMode(b, OUTPUT);
  pinMode(c, OUTPUT);
  pinMode(d, OUTPUT);
  pinMode(e, OUTPUT);
  pinMode(f, OUTPUT);
  pinMode(g, OUTPUT);

  for (int i = 2 ; i < 9; i++) {
    digitalWrite(i, HIGH);
  }
}

void loop() {
  Serial.println("masukkan Password :");
  while (Serial.available() == 0) {}
  String password = Serial.readString();

  password.trim(); 
  if (password == "5006") {
    for (int i = 0; i < 3 ; i++) {

      digitalWrite(a, LOW);
      digitalWrite(b, LOW);
      digitalWrite(c, LOW);
      digitalWrite(d, LOW);
      digitalWrite(e, LOW);
      digitalWrite(f, LOW);
      digitalWrite(g, HIGH);
      delay(500);
      digitalWrite(a, HIGH);
      digitalWrite(b, HIGH);
      digitalWrite(c, HIGH);
      digitalWrite(d, HIGH);
      digitalWrite(e, HIGH);
      digitalWrite(f, HIGH);
      digitalWrite(g, HIGH);
      delay(500);
    }
    for (int j = 0; j < 5; j++) {

      int i = 2;
      while (true) {

        digitalWrite(i, LOW);
        delay(50);

        digitalWrite(i, HIGH);
        delay(50);
        i++;
        if (i == g) {
          i++;
        } else if (i == 9) {
          break;
        }

      }
    }
  }
}