const int ledPin12 = 12;
const int ledPin11 = 11;
const int ledPin10 = 10;

void setup() {
 
 pinMode(ledPin12, OUTPUT);
 pinMode(ledPin11, OUTPUT);
 pinMode(ledPin10, OUTPUT);


 Serial.begin(9600); 
}
void loop() {

int randomValue = random(0, 3);
unsigned long currentTime = millis();


Serial.print("Random Value: ");
Serial.println(randomValue);

switch (randomValue){
  case 0: {
    digitalWrite(ledPin12, HIGH);
    delay(1000);
    digitalWrite(ledPin12, LOW);
    break;
  }
  case 1: {
    digitalWrite(ledPin11, HIGH);
    delay(1000);
    digitalWrite(ledPin11, LOW);
    break;
  }
  case 2: {
    digitalWrite(ledPin10, HIGH);
    delay(1000);
    digitalWrite(ledPin10, LOW);
   break; 
  }
}

}