void setup() {
  pinMode(13, OUTPUT);
  pinMode(7, INPUT);
  pinMode(4, INPUT);
  pinMode(2, INPUT);
  digitalWrite(13, 0);
  
}

void loop() {
  if(digitalRead(7)==1){
    digitalWrite(13, HIGH);
    delay(150);
  }
  if(digitalRead(7)==0){
    digitalWrite(13, LOW);
    delay(150);
  }
  if(digitalRead(4)==1){
    digitalWrite(13, 1);
    delay(150);
  }
  if(digitalRead(2)==1){
    digitalWrite(13, 0);
    delay(150);
  }
  }