int buzzerPin=11;
const int ledPin=12;
void setup() {
pinMode(12,OUTPUT);
pinMode(13,OUTPUT);
}
void loop() {
  digitalWrite(ledPin,HIGH);
  delay(1000);
  digitalWrite(ledPin,LOW);
  delay(1000);
  digitalWrite(buzzerPin,HIGH);
  delay(1000);
  digitalWrite(buzzerPin,LOW);
  delay(1000);
  }