void setup() {
  pinMode(5, INPUT_PULLUP);
  pinMode(6, INPUT_PULLUP);
  pinMode(7, INPUT_PULLUP);
  pinMode(10, OUTPUT);
  pinMode(13, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  bool s5 = digitalRead(5);
  bool s6 = digitalRead(6);
  bool s7 = digitalRead(7);
  Serial.println(String(s7) + " " + String(s6) + " " + String(s5));
  if ((s5 == 0 && s6 == 0 && s7 == 1) || (s5 == 0 && s6 == 1 && s7 == 0)) {
    digitalWrite(10, HIGH);
    digitalWrite(13, LOW);
    delay(250);
    digitalWrite(10, LOW);
    digitalWrite(13, HIGH);
    delay(250);
  }
  else if ((s5 == 1 && s6 == 1 && s7 == 0) || (s5 == 1 && s6 == 0 && s7 == 1)) {
    digitalWrite(10, HIGH);
    digitalWrite(13, HIGH);
    delay(250);
    digitalWrite(10, LOW);
    digitalWrite(13, LOW);
    delay(250);
  }
  else if (s5 == 0 && s6 == 0 && s7 == 0) {
    digitalWrite(13, LOW);
    digitalWrite(10, HIGH);
    delay(250);
    digitalWrite(10, LOW);
    delay(250);
  }
  else if (s5 == 1 && s6 == 1 && s7 == 1) {
    digitalWrite(10, LOW);
    digitalWrite(13, HIGH);
    delay(250);
    digitalWrite(13, LOW);
    delay(250);
  }
  delay(50);
}