int led = 13;
int pb1 = 2;
int pb2 = 3;

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);
  }
}