#define IR 2
#define RLED 3
#define GLED 4
#define BUZ 5
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
pinMode(IR, INPUT);
pinMode(RLED, OUTPUT);
pinMode(GLED, OUTPUT);
pinMode(BUZ, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
int value=digitalRead(IR);
Serial.print("IR:");
Serial.println(value);

if (value==0){
digitalWrite(RLED, HIGH);
digitalWrite(BUZ, HIGH);
delay(1000);
digitalWrite(GLED, LOW);
}
else {
  digitalWrite(RLED, LOW);
  digitalWrite(BUZ, LOW);
  delay(1000);
  digitalWrite(GLED, HIGH);
}
}