int s=0;
void setup() {
  // put your setup code here, to run once:
  pinMode(7, INPUT);
  pinMode(6, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(4, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:

  s=digitalRead(7);
  if(s==HIGH)
  {
    digitalWrite(6, HIGH);
    delay(1000);
    digitalWrite(6, LOW);
    delay(1000);
    for(int i=0;i<2;i++)
    {
      digitalWrite(5, HIGH);
      delay(1000);
      digitalWrite(5, LOW);
      delay(1000);
    }
    for(int i=0;i<3;i++)
    {
      digitalWrite(4, HIGH);
      delay(1000);
      digitalWrite(4, LOW);
      delay(1000);
    }
  }

  else if(s==0)
  {
    digitalWrite(6, LOW);
    digitalWrite(5, LOW);
    digitalWrite(4, LOW);
  }
  
}