const int LED1 = 10;
const int LED2 = 11;

const int DELAY = 500;

int i = 1;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  if (!(i % 3) && !(i % 5)) {
    Serial.println("FizzBuzz");
    digitalWrite(LED1, HIGH);
    digitalWrite(LED2, HIGH);
  } else if (!(i % 3)) {
    Serial.println("Fizz");
    digitalWrite(LED1, HIGH);
    digitalWrite(LED2, LOW);
  } else if (!(i % 5)) {
    Serial.println("Buzz");
    digitalWrite(LED1, LOW);
    digitalWrite(LED2, HIGH);
  } else {
    Serial.println(i);
    digitalWrite(LED1, LOW);
    digitalWrite(LED2, LOW);
  }
  i++;
  if (i == 31) {
    i = 1;
  }
  delay(DELAY);

}