void setup(){
 pinMode(A0, INPUT);
pinMode(8, OUTPUT);
Serial.begin(115200);
}

void loop() {
 int a=analogRead(A0);
 Serial.println(a);
 delay(1000);
 if (a<200)
 digitalWrite(8, HIGH);
 else
 digitalWrite(8, LOW);
 delay(1000);

if (a<300)
 digitalWrite(5, HIGH);
 else
 digitalWrite(5, LOW);

}