int SW1 = 0;
int SW2 = 0;
int SW3 = 0;

void setup() {
  pinMode(13, INPUT);
  pinMode(12, INPUT);
  pinMode(11, INPUT);
  pinMode(10, INPUT);
  pinMode(9, INPUT);
  pinMode(8, INPUT);
  // put your setup code here, to run once:
}

void loop() {
  // put your main code here, to run repeatedly:
SW1 = digitalRead(13);
SW2 = digitalRead(12);
SW3 = digitalRead(11);
if(SW1 == 1){
  digitalWrite(10, HIGH);
}
else{
  digitalWrite(10, LOW);
}

if(SW2 == 1){
  digitalWrite(10, HIGH);
  digitalWrite(9, HIGH);
}
else{
  digitalWrite(10, LOW);
  digitalWrite(9, LOW);
}

if(SW3 == 1){
  digitalWrite(10, HIGH);
  digitalWrite(9, HIGH);
  digitalWrite(8, HIGH);
}
else{
  digitalWrite(10,LOW);
  digitalWrite(9, LOW);
  digitalWrite(8, LOW);
}
}