#define A 13
#define B 4
#define C 14
#define D 27
#define E 26
#define F 25
#define H 5
#define I 21
#define BUTTON 18
const int AC[] = {A, B, C, D, E, F, H, I};
const int AC_LENGTH = sizeof(AC) / sizeof(AC[0]);

void setup() {
  Serial.begin(115200);
  
  pinMode(BUTTON, INPUT);
  
  for (int u = 0; u < AC_LENGTH; u++) {
    pinMode(AC[u], OUTPUT);
    Serial.println("Setting up port OUTPUT> " + String(AC[u]));
    //digitalWrite(AC[u], HIGH);
   // delay(500);
  }
}

void loop() {
  //digitalWrite(AC[1], HIGH);
  //Serial.println(digitalRead(BUTTON));
  if (digitalRead(BUTTON) == HIGH) {
    for (int u = 0; u < AC_LENGTH; u++) {
      //Serial.println("Turning on led: " + String(AC[u]));
      digitalWrite(AC[u], HIGH);
      delay(100);
      digitalWrite(AC[u], LOW);
    }
    for (int u = AC_LENGTH - 1; u >= 0; u--) {
      //Serial.println("Turning on led: " + String(AC[u]));
      digitalWrite(AC[u], HIGH);
      delay(100);
      digitalWrite(AC[u], LOW);
    }
  }
  delay(10);
}