int kuning = 0;
int hijau = 1;

void setup() {
  // put your setup code here, to run once:
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(7, OUTPUT);
  pinMode(8, OUTPUT);
  pinMode(9, OUTPUT);
  pinMode(kuning, INPUT);
  pinMode(hijau, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  if(digitalRead(hijau) == HIGH){
    digitalWrite(5, HIGH);
    digitalWrite(9, HIGH);
    delay(500);
    digitalWrite(5, LOW);
    digitalWrite(9, LOW);
    digitalWrite(4, HIGH);
    digitalWrite(8, HIGH);
    delay(500);
    digitalWrite(4, LOW);
    digitalWrite(8, LOW);
    digitalWrite(3, HIGH);
    digitalWrite(7, HIGH);
    delay(500);
    digitalWrite(3, LOW);
    digitalWrite(7, LOW);
    digitalWrite(2, HIGH);
    digitalWrite(6, HIGH);
    delay(500);
    digitalWrite(2, LOW);
    digitalWrite(6, LOW);
  }
  if(digitalRead(kuning) == HIGH){
    for(int i = 2; i <= 5; i++){
      digitalWrite(i, HIGH);
      delay(500);
      digitalWrite((i), LOW);
    }
    for(int i = 5; i >= 2; i--){
      digitalWrite(i, HIGH);
      delay(500);
      digitalWrite((i), LOW);
    }
  }
}