Daniel, Andrew, Matthew Full Adder Arduino

#define B1 2
#define B2 4
#define B3 3
#define L1 7
#define L2 5

boolean b1L=false;
boolean b2L =false;
boolean b3L =false;
boolean debounce(boolean last, int pin){
  boolean current = digitalRead(pin);
  if(last!=current) {
    delay (5);
    current = digitalRead(pin);
  }
  return current;


}

void setup() {
  // put your setup code here, to run once:
  pinMode(B1, INPUT);
  pinMode(B2, INPUT);
  pinMode(B3, INPUT);
  pinMode(L1, OUTPUT);
  pinMode(L2, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  boolean  b1A, b2A, b3A;
  b1A = debounce(b1L, B1);
  b2A = debounce(b2L, B2);
  b3A = debounce(b3L, B3);



Serial.print(b1A);
Serial.print(b2A);
Serial.println(b3A);
                    //one button             //don't turn on light if two or three
digitalWrite(L1, (b1A ^ b2A ^b3A) && (!((b1A&&b2A)||(b1A&&b3A)||(b2A&&b3A)) || (b1A && b2A && b3A)));//||(b1A && b2A && b3A)
                      //two buttons                 //don't turn on if three
digitalWrite(L2, ((b1A&&b2A)||(b1A&&b3A)||(b2A&&b3A)) );
                      //three buttons

  b1L = b1A;
  b2L = b2A;
}