void setup() {
  // put your setup code here, to run once:
for(int i=2;i<=11;i++){
  pinMode(i, OUTPUT);

}
pinMode(12, INPUT);
for(int i=2;i<=11;i++){
  digitalWrite(i, HIGH);
}
}

void loop() {
  // put your main code here, to run repeatedly:
  int j=0;
  if(digitalRead(12)==LOW){
    j++;
    digitalWrite(j+1, LOW);
  }

}