int red = 3;
int yellow = 2;
int buzzer1 = 8;
int buzzer2 = 9;
int buzzer3 = 10;
int blue = 1;
int led = 4;
int button_state_red = 0;
int button_state_yellow = 0;
int button_state_blue = 0;
void setup() {
  // put your setup code here, to run once:
  pinMode(red, INPUT);
  pinMode(yellow, INPUT);
  pinMode(blue, INPUT);
  pinMode(led, OUTPUT);
  pinMode(buzzer1, OUTPUT);
  pinMode(buzzer2, OUTPUT);
  pinMode(buzzer3, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  button_state_red = digitalRead(red);
  button_state_yellow = digitalRead(yellow);
  button_state_blue = digitalRead(blue);

  if (button_state_red) {
    tone(buzzer1, 100);
    delay(200);
    noTone(buzzer1);
  }
  else {
    noTone(buzzer1);
  }

  if (button_state_yellow) {
    tone(buzzer2, 500);
    delay(200);
    noTone(buzzer2);
  }
  else {
    noTone(buzzer2);
  }

  if (button_state_blue) {
    tone(buzzer3, 600);
    delay(200);
    noTone(buzzer3);
  }
  else {
    noTone(buzzer3);
  }
}