void setup() {
  Serial.begin(9600);
  while (Serial.available() == 0);
  char n1 = Serial.read();
  while (Serial.available() == 0);
  char n2 = Serial.read();
  while (Serial.available() == 0);
  char n3 = Serial.read();




  int num =




  for (int q = 1;     ;     ) {
    if (q       ) {

    }
  }
}

void loop() {
  // put your main code here, to run repeatedly:

}