int LEDH = 19;
int LEDK = 18;
int LEDM = 5 ;
int PB   = 15;

void setup() {
  // put your setup code here, to run once:
  pinMode(LEDH, OUTPUT);
  pinMode(LEDK, OUTPUT);
  pinMode(LEDM, OUTPUT);
  pinMode(PB  , INPUT );
}

void loop() {
  // put your main code here, to run repeatedly:
  if (digitalRead(PB) == HIGH)
  {for (int pencacah = 1 ; pencacah <= 5 ; pencacah++)
  
  {
    digitalWrite(LEDH, HIGH);
    delay(1000);
    digitalWrite(LEDH, LOW);
    delay(1000);
    digitalWrite(LEDK, HIGH);
    delay(1000);
    digitalWrite(LEDK, LOW);
    delay(1000);
    digitalWrite(LEDM, HIGH);
    delay(1000);
    digitalWrite(LEDM, LOW);
    delay(1000);

  }
}
}