int temp , m = 10, sum, r = 10,flag=0,temp2,n;
String input;
const int ledPin = 13;

void setup() {
  Serial.begin(9600);
  Serial.setTimeout(10);
  pinMode(ledPin,OUTPUT);
}
void loop() {
  while (Serial.available()==0){}
  input = Serial.readStringUntil('\n');
  Serial.println("The value of n " + input);
  n = input.toInt();
  temp = n;
  temp2 = n;
  while (temp2 <= temp && flag<=1) {
      while (n >= m)
        n /= 10;
      m*=10;
      temp2 = n;
      Serial.println(n+"  "+m);
      sum=0;
      while (n > 0) {
        r = n % 10;
        sum = (sum * 10) + r;
        n = n / 10;
      }
      if (temp2 == sum) {
        Serial.println("1");
        digitalWrite(ledPin,HIGH);
      } else {
        Serial.println("0");
        digitalWrite(ledPin,LOW);
      }
      n=temp;
      if(temp2==temp) {
        flag++;
      }
    }
}