int switchstate=0;
void setup() {
  pinMode(2, INPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
}

void loop() {
  switchstate=digitalRead(2);
  if(switchstate==LOW){
    digitalWrite(3, HIGH);
    digitalWrite(4, LOW);
    digitalWrite(5, LOW);
  }else{
    digitalWrite(3, LOW);
    digitalWrite(4, HIGH);
    digitalWrite(5, LOW);
    delay(250);
    digitalWrite(4,LOW);
    digitalWrite(5,HIGH);
    delay(250);
  }

}