const int button1 = 2;
const int button2 = 3;
const int L1 = 5;
const int L2 = 6;

void setup() {
  pinMode(button1, INPUT);
  pinMode(button2, INPUT);
  pinMode(L1, OUTPUT);
  pinMode(L2, OUTPUT);
  digitalWrite(L1, LOW);
  digitalWrite(L2, LOW);
}

void loop() {
  int button1State = digitalRead(button1);
  int button2State = digitalRead(button2);
  if (button1State == HIGH && button2State == LOW) {
    digitalWrite(L1, HIGH);
    digitalWrite(L2, LOW);
  }
  else if (button2State == HIGH && button1State == LOW) {
    digitalWrite(L1, LOW);
    digitalWrite(L2, HIGH);
  }
  else if (button1State == HIGH && button2State == HIGH) {
    digitalWrite(L1, HIGH);
    digitalWrite(L2, LOW);
    delay(200);
    digitalWrite(L1, LOW);
    digitalWrite(L2, HIGH);
    delay(200);
  }
  else {
    digitalWrite(L1, LOW);
    digitalWrite(L2, LOW);
  }
}