void setup()  {
pinMode(2, INPUT);
pinMode(3, OUTPUT);
pinMode(4, OUTPUT);
}

void   loop()
{
if (digitalRead(2)==HIGH)
{
digitalWrite(3, HIGH);
delay(1000
);
digitalWrite(3, LOW);

digitalWrite(4, HIGH);
delay(1000
);

digitalWrite(4, LOW);

}

else{
  digitalWrite(3, LOW);
  digitalWrite(4, LOW);
}



}