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);
  }
}