// NAME: MUHAMMAD HAZIQ HAZIM BIN MOHD SHAHID
// METRIX NO.: 06DAD24F1140
// CLASS: DAD4D
int Lights[] = {5, 18, 19}; // Red, Yellow, Green

void setup() {
  for(int i = 0; i < 3; i++) {
    pinMode(Lights[i], OUTPUT);
  }
}

void loop() {
  // RED ON
  digitalWrite(Lights[0], HIGH);
  delay(3000);
  digitalWrite(Lights[0], LOW);

  // YELLOW ON
  digitalWrite(Lights[1], HIGH);
  delay(1000);
  digitalWrite(Lights[1], LOW);

  // GREEN ON
  digitalWrite(Lights[2], HIGH);
  delay(3000);
  digitalWrite(Lights[2], LOW);
}