void setup() {
  // put your setup code here, to run once:
pinMode(5, INPUT);
pinMode(7, INPUT);
pinMode(9, OUTPUT);
digitalWrite(5,HIGH );
digitalWrite(7, HIGH );
digitalWrite(9, LOW);
}

void loop() {
  // put your main code here, to run repeatedly:
if(digitalRead(5)==LOW)
{
  digitalWrite(9, HIGH);
}
if(digitalRead(7)==LOW)
{
  digitalWrite(9, LOW);
}
}