#define led1 13
#define led2 12
#define led3 11
#define led4 10
#define interruptPin1 3
#define interruptPin2 2
volatile int num = 0;
///volatile byte state = 0;

void setup() {
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);
  pinMode(led4, OUTPUT);
  pinMode(interruptPin1, INPUT_PULLUP);
  pinMode(interruptPin2, INPUT_PULLUP);
  attachInterrupt(digitalPinToInterrupt(interruptPin1), increment, FALLING);
  attachInterrupt(digitalPinToInterrupt(interruptPin2), decrement, FALLING);
  Serial.begin(9600);



}

void loop() {

  Serial.println(num);
  digitalWrite(led1, HIGH);
  delay(250);
  digitalWrite(led2, HIGH);
  delay(250);
  digitalWrite(led3, HIGH);
  delay(250);
  digitalWrite(led4, HIGH);
  delay(250);

  digitalWrite(led1, LOW);
  digitalWrite(led2, LOW);
  digitalWrite(led3, LOW);
  digitalWrite(led4, LOW);
  delay(250);

}
void increment() {

  digitalWrite(led1, HIGH);
  digitalWrite(led2, HIGH);
  digitalWrite(led3, HIGH);
  digitalWrite(led4, HIGH);
  delay(1000);

}

void decrement() {


  digitalWrite(led1, LOW);
  digitalWrite(led2, LOW);
  digitalWrite(led3, LOW);
  digitalWrite(led4, LOW);
  delay(5000);

}