#define buttonRed 1
#define buttonGreen 2
#define buzzer 3

#define led_red 13
#define led_yellow 12
#define led_green 11
#define led_blue 10

void setup() {
  pinMode(buzzer, OUTPUT);
  pinMode(led_red, OUTPUT);
  pinMode(led_yellow, OUTPUT);
  pinMode(led_green, OUTPUT);
  pinMode(led_blue, OUTPUT);
}

void loop() {
  noTone(buzzer);
  digitalWrite(led_red, LOW);
  digitalWrite(led_yellow, LOW);
  digitalWrite(led_green, LOW);
  digitalWrite(led_blue, LOW);

  int buttonStateRed = digitalRead(buttonRed);
  int buttonStateGreen = digitalRead(buttonGreen);

  switch (buttonStateRed) {
    case HIGH:
      tone(buzzer, 500);
      delay(500);
      noTone(buzzer);

      digitalWrite(led_red, HIGH);
      delay(500);

      digitalWrite(led_red, LOW);
      digitalWrite(led_yellow, HIGH);
      delay(500);

      digitalWrite(led_green, HIGH);
      digitalWrite(led_yellow, LOW);
      delay(500);

      digitalWrite(led_green, LOW);
      digitalWrite(led_blue, HIGH);
      delay(500);

      digitalWrite(led_red, LOW);
      digitalWrite(led_yellow, LOW);
      digitalWrite(led_green, LOW);
      digitalWrite(led_blue, LOW);
      delay(500);

      digitalWrite(led_red, HIGH);
      digitalWrite(led_yellow, HIGH);
      digitalWrite(led_green, HIGH);
      digitalWrite(led_blue, HIGH);
      delay(500);
      break;
  }

  switch (buttonStateGreen) {
    case HIGH:
      tone(buzzer, 1000);
      delay(500);
      noTone(buzzer);

      digitalWrite(led_red, HIGH);
      digitalWrite(led_yellow, HIGH);
      digitalWrite(led_green, LOW);
      digitalWrite(led_blue, LOW);
      delay(500);

      digitalWrite(led_red, LOW);
      digitalWrite(led_yellow, LOW);
      digitalWrite(led_green, HIGH);
      digitalWrite(led_blue, HIGH);
      delay(500);

      digitalWrite(led_red, LOW);
      digitalWrite(led_yellow, LOW);
      digitalWrite(led_green, LOW);
      digitalWrite(led_blue, LOW);
      delay(500);

      digitalWrite(led_red, HIGH);
      digitalWrite(led_yellow, HIGH);
      digitalWrite(led_green, HIGH);
      digitalWrite(led_blue, HIGH);
      delay(500);
      break;
  }

  if (buttonStateRed == LOW && buttonStateGreen == LOW) {
    noTone(buzzer);
    digitalWrite(led_red, LOW);
    digitalWrite(led_yellow, LOW);
    digitalWrite(led_green, LOW);
    digitalWrite(led_blue, LOW);
    delay(200);
  }
}