void setup() {
  pinMode(7, INPUT);
  pinMode(5, OUTPUT);
   pinMode(3, OUTPUT);
}

void loop() {
  int a=digitalRead(7);
  if (a==0)
  {
  digitalWrite(5,HIGH);
  delay(2000);
  digitalWrite(3,HIGH);
  delay(3000);
  digitalWrite(3,LOW);
delay(2000);
  }
  
else
{
digitalWrite(5,LOW);
delay(5000);

}
}