#define ledv 8
#define ledr 12
#define SW2 4
#define SW1 3
#define SW0 2

void setup() {
  // put your setup code here, to run once:
  pinMode(12, OUTPUT);
  pinMode(8, OUTPUT);
  pinMode(4, INPUT);
  pinMode(3, INPUT);
  pinMode(2, INPUT);
 
}

void loop() {
  // put your main code here, to run repeatedly:
  bool etat_SW2 = digitalRead(4);
  bool etat_SW1 = digitalRead(3);
  bool etat_SW0 = digitalRead(2);

  bool etat_ledv = (!etat_SW2) && (!etat_SW1) && (etat_SW0) ;
  bool etat_ledr = (!etat_ledv) ;
    digitalWrite(8, etat_ledr);
    digitalWrite(12, etat_ledv);

}