int left_led = 2;
int right_led = 3;
int top_led = 4;
int bottom_led = 5;

void setup() {
  pinMode(left_led, OUTPUT);
  pinMode(right_led, OUTPUT);
  pinMode(top_led, OUTPUT);
  pinMode(bottom_led, OUTPUT);

  pinMode(A0, INPUT); 
  pinMode(A1, INPUT); 

  Serial.begin(9600);
}

void loop() {
  Serial.println();
  int xval = analogRead(A0);
  int yval = analogRead(A1);

   Serial.println(xval);
   Serial.println(yval);
   
  if (xval < 400) {
  digitalWrite(left_led, HIGH);
  digitalWrite(right_led, LOW);
  digitalWrite(top_led, LOW);
  digitalWrite(bottom_led, LOW);
  } 
  else if (xval > 600) {
  digitalWrite(right_led, HIGH);
  digitalWrite(left_led, LOW);
  digitalWrite(top_led, LOW);
  digitalWrite(bottom_led, LOW);
  }

  if (yval < 400) {
   digitalWrite(right_led, LOW);
   digitalWrite(left_led, LOW);
   digitalWrite(top_led, HIGH);
   digitalWrite(bottom_led, LOW);
  } 
  else if (yval > 600) {
  digitalWrite(right_led, LOW);
  digitalWrite(left_led, LOW);
  digitalWrite(top_led, LOW);
  digitalWrite(bottom_led, HIGH);
  }

  delay(100);
}