void setup() {
  // put your setup code here, to run once:
  //red
  pinMode(A0, OUTPUT);
  //blue
  pinMode(A3, OUTPUT);
  //green
  pinMode(A4, OUTPUT);
  pinMode(8, OUTPUT);
  pinMode(9, OUTPUT);
  Serial.begin(115200);
  Serial.println("Ввдеите число для лампочек: ");
  // Serial.println("312312");
}

// 
int g  = 0;
void loop() {
  // put your main code here, to run repeatedly:
  
  if(Serial.available() > 0)
  {
    // Serial.println("число:"); 
    //Serial.read();
    //g = Serial.parseInt();
    g = Serial.parseInt(SKIP_WHITESPACE, '\n');
    // char k = Serial.read();
    // Serial.read();
    Serial.println(g);
  }
  // Serial.println(g);
  switch(g)
  {
    case 1:
      digitalWrite(8, HIGH);
      digitalWrite(9, LOW);
      digitalWrite(A0, LOW);
      digitalWrite(A3, LOW);
      digitalWrite(A4, LOW);
      //delay(1000);
      break;
    case 2:
      digitalWrite(8, LOW);
      digitalWrite(9, HIGH);
      digitalWrite(A0, LOW);
      digitalWrite(A3, LOW);
      digitalWrite(A4, LOW);
      break;
    case 3:
      digitalWrite(A3, HIGH);
      digitalWrite(A4, LOW);
      digitalWrite(A0, LOW);
      digitalWrite(8, LOW);
      digitalWrite(9, LOW);
      delay(1000);
      break;
    case 4:
      digitalWrite(A3, LOW);
      digitalWrite(A4, HIGH);
      digitalWrite(A0, LOW);
      digitalWrite(8, LOW);
      digitalWrite(9, LOW);
      break;
    case 5:
      digitalWrite(A3, LOW);
      digitalWrite(A4, LOW);
      digitalWrite(A0, HIGH);
      digitalWrite(8, LOW);
      digitalWrite(9, LOW);
      break;

  }
    // int g = Serial.read(); 
    // перевод строки в число
    // Serial.println(g- 48);
   // int f = Serial.parseInt();
    //Serial.println(f);
  //}
}