int LED = 13;
int pb1 = 7;
int pb2 = 6;

void setup() {
  pinMode(LED, OUTPUT);
  pinMode(pb1, INPUT);
  pinMode(pb2, INPUT);
}

void loop(){
  if (digitalRead(pb1) == HIGH){
    digitalWrite(LED, HIGH);
  }
  if(digitalRead(pb2)==HIGH){
    digitalWrite(LED, LOW);
  }
}