#define LED_PIN_1 8
#define LED_PIN_2 7
#define LED_PIN_3 6
#define LED_PIN_4 5
#define BUTTON_PIN_1 13
#define BUTTON_PIN_2 12
#define BUTTON_PIN_3 11
#define BUTTON_PIN_4 10

void setup() {
  pinMode(LED_PIN_1, OUTPUT);
  pinMode(LED_PIN_2, OUTPUT);
  pinMode(LED_PIN_3, OUTPUT);
  pinMode(LED_PIN_4, OUTPUT);
  pinMode(BUTTON_PIN_1, INPUT);
  pinMode(BUTTON_PIN_2, INPUT);
  pinMode(BUTTON_PIN_3, INPUT);
  pinMode(BUTTON_PIN_4, INPUT);
}
void loop() {
  if (digitalRead(BUTTON_PIN_1) == HIGH) {
    digitalWrite(LED_PIN_1, HIGH);
    digitalWrite(LED_PIN_2, HIGH);
    digitalWrite(LED_PIN_3, LOW);
    digitalWrite(LED_PIN_4, HIGH);
  }
  else if (digitalRead(BUTTON_PIN_2) == HIGH) {
    digitalWrite(LED_PIN_1, HIGH);
    digitalWrite(LED_PIN_2, LOW);
    digitalWrite(LED_PIN_3, LOW);
    digitalWrite(LED_PIN_4, HIGH);
  }
  else if (digitalRead(BUTTON_PIN_3) == HIGH) {
    digitalWrite(LED_PIN_1, LOW);
    digitalWrite(LED_PIN_2, LOW);
    digitalWrite(LED_PIN_3, LOW);
    digitalWrite(LED_PIN_4, HIGH);
  }
  else if (digitalRead(BUTTON_PIN_4) == HIGH) {
    digitalWrite(LED_PIN_1, LOW);
    digitalWrite(LED_PIN_2, LOW);
    digitalWrite(LED_PIN_3, LOW);
    digitalWrite(LED_PIN_4, LOW);
  }
    else {
    digitalWrite(LED_PIN_1, HIGH);
    digitalWrite(LED_PIN_2, HIGH);
    digitalWrite(LED_PIN_3, HIGH);
    digitalWrite(LED_PIN_4, HIGH);
  }
}