int ledpins[3] = {12, 13, 14};
int buttonpins[3] = {4, 18, 23};
void setup() {
  for (int a = 0; a < 3; a++) {
    pinMode(ledpins[a], OUTPUT);
    pinMode(buttonpins[a], INPUT_PULLUP);
  }
}
void loop() {
  for (int a = 0; a < 3; a++) {
    if (digitalRead(buttonpins[a])) {
      digitalWrite(ledpins[a], 0);
    } else {
      digitalWrite(ledpins[a], 1);
    }
  }
}