void setup() {
  // put your setup code here, to run once:
  pinMode(15, OUTPUT);
  pinMode(2, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(12, INPUT_PULLUP);
  pinMode(14, INPUT_PULLUP);
  pinMode(13, INPUT_PULLUP);
}

void loop() {
  // put your main code here, to run repeatedly:
if(digitalRead(12)==LOW){digitalWrite(15, HIGH);}
if(digitalRead(12)==LOW){digitalWrite(2, HIGH);}
if(digitalRead(14)==LOW){digitalWrite(4, HIGH);}
if(digitalRead(14)==LOW){digitalWrite(5, HIGH);}
if(digitalRead(13)==LOW){digitalWrite(15, LOW);}
if(digitalRead(13)==LOW){digitalWrite(2, LOW);}
if(digitalRead(13)==LOW){digitalWrite(4, LOW);}
if(digitalRead(13)==LOW){digitalWrite(5, LOW);}
}