int red = 2;
int yellow= 4;
int green= 12;

void setup() {
  Serial.begin(115200);
  pinMode(18, INPUT);
  pinMode(red, OUTPUT);
  digitalWrite(red, LOW);
  pinMode(yellow, OUTPUT);
  digitalWrite(yellow, LOW);
  pinMode(green, OUTPUT);
  digitalWrite(green, LOW);

}

void loop() {
  digitalWrite(red, HIGH);

  activateRed();
  delay(10000); //10 seconds

  if(isPressed() == 1)
  return;
  digitalWrite(red, LOW);
  digitalWrite(yellow, HIGH);

  activateRed();

  delay(3000); //3 seconds

  if(isPressed() == 1)
  return;
  digitalWrite(yellow, LOW);
  digitalWrite(green, HIGH);

  activateRed();

  delay(10000); //10 seconds
  if(isPressed() == 1)
  return;
  digitalWrite(green, LOW);
}
void activateRed()
{
  if(isPressed() == 1)
  {
    digitalWrite(red, HIGH);
    digitalWrite(yellow, LOW);
    digitalWrite(green, LOW);
  }
}
bool isPressed()
{
  return digitalRead(18);
}