const byte SLED = 0;
const byte LED4 = 2;
const byte LED3 = 1;
const byte LED2 = 4;
const byte LED1 = 3;
const byte delay1 = 90;


void setup() {
   pinMode(SLED, OUTPUT);
  pinMode(LED4, OUTPUT);
  pinMode(LED3, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(LED1, OUTPUT);
  delay(250);
  digitalWrite(LED4, HIGH);
  digitalWrite(LED3, HIGH);
  digitalWrite(LED2, HIGH);
  digitalWrite(LED1, HIGH);

  for (byte i = 0; i <5; i++){
    digitalWrite(SLED, LOW);
    delay(400);
    digitalWrite(SLED, HIGH);
    delay(400);
  } 
}

void loop() {
    if (digitalRead(LED1)==LOW){
    digitalWrite(LED4, HIGH);
    delay(delay1);
    digitalWrite(LED3, HIGH);
    delay(delay1);
    digitalWrite(LED2, HIGH);
    delay(delay1);
    digitalWrite(LED1, HIGH);
    delay(200);
  }

  else{
    digitalWrite(LED4, LOW);
    delay(delay1);
    digitalWrite(LED3, LOW);
    delay(delay1);
    digitalWrite(LED2, LOW);
    delay(delay1);
    digitalWrite(LED1, LOW);
    delay(200);
  }
}