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

void loop() {
  b=digitalRead(4);
  if (b==1){
    digitalWrite(3, HIGH);
    delay(200);
    digitalWrite(3, LOW);
    delay(200);
  }else{
    digitalWrite(3, HIGH);
    delay(1000);
    digitalWrite(3, LOW);
    delay(1000);
  }
}