int count=0;
int status;
void setup() {
  // put your setup code here, to run once:
  pinMode(7, OUTPUT);
  pinMode(8, INPUT);
  status=digitalRead(8);
}

void loop() {
  // put your main code here, to run repeatedly:
  if(status!=digitalRead(8)){
      if(status == LOW)count++;
      status=!status;
      // printf(status);
  }
  
  if(count%2==0){
      digitalWrite(7, HIGH);
  }
  else{
      digitalWrite(7, LOW);
  }
  delay(50);
}