#include <SoftwareSerial.h>

const int rx = 8;
const int tx = 7;
const int sensor = 1;
int data1;
int data2;
int data3;
int data4;
int data5;
int data6;
int data7;
int data8;
int data9;
int data10;
int data;
int serialin;
int serialout;
SoftwareSerial mySerial (tx, rx);
void setup() {


  mySerial.begin(9600);
  pinMode (sensor , INPUT);


}
void loop() {

  if (mySerial.available() > 0) {
    int x = mySerial.read();


    if (x == '2') {
      mySerial.println ("2");

    }

    if (x == '3') {
      mySerial.println ("3");

    }

    if (x == '4') {
      mySerial.println ("4");

    }

    if (x == '5') {
      mySerial.println ("5");

    }

    if (x == '1') {


      while (x == '1') {

        int data1 = analogRead (sensor);
        delay (10);
        int data2 = analogRead (sensor);
        delay (10);
        int data3 = analogRead (sensor);
        delay (10);
        int data4 = analogRead (sensor);
        delay (10);
        int data5 = analogRead (sensor);
        delay (10);
        int data6 = analogRead (sensor);
        delay (10);
        int data7 = analogRead (sensor);
        delay (10);
        int data8 = analogRead (sensor);
        delay (10);
        int data9 = analogRead (sensor);
        delay (10);
        int data10 = analogRead (sensor);
        delay (10);
        data = ((data1 + data2 + data3 + data4 + data5 + data6 + data7 + data8 + data9 + data10) / 10);
        int x = mySerial.read();

        if (x == '0') {
          break;

        }

        if (x == '2') {
          mySerial.println ("2");
          break;
        }

        if (x == '3') {
          mySerial.println ("3");
          break;
        }

        if (x == '4') {
          mySerial.println ("4");
          break;
        }

        if (x == '5') {
          mySerial.println ("5");
          break;
        }
        if (data >= 1000)
        {
          mySerial.println ("2");
        }

        else
        {
          mySerial.println ("5");
        }

      }
    }

  }
}