const int IRSENSOR=5;
const int BUZZER=9;
void setup() {
  pinMode(IRSENSOR, INPUT);
  pinMode(BUZZER,OUTPUT);
}
void loop() {
  int DATA;
DATA=digitalRead(IRSENSOR);
if(DATA==1) 
{
digitalWrite(BUZZER, HIGH);
}
else
{int red=11;
  int yellow=12;
  int green=13;
  void setup()
  {
    pinMode(red,OUTPUT);                
    pinMode(yellow,OUTPUT);
    pinMode(green,OUTPUT);
  }
void loop() {
  digitalWrite(red,HIGH);
  digitalWrite(yellow,LOW);
  digitalWrite(green,LOW);
  delay(1500);
  digitalWrite(red,LOW);
  digitalWrite(yellow,HIGH);
  digitalWrite(green,LOW);
  delay(500);
  digitalWrite(red,LOW);
  digitalWrite(yellow,LOW);
  digitalWrite(green,HIGH);
  delay(5000);
  digitalWrite(red,LOW);
  digitalWrite(yellow,LOW);
  digitalWrite(green,LOW);
  delay(2000);
  digitalWrite(red,HIGH);
  digitalWrite(yellow,HIGH);
  digitalWrite(green,HIGH);
  delay(1000);
} 
digitalWrite(BUZZER, LOW);
}
}