const byte output_led=39;
const byte INPUT_button_1=34;
const byte INPUT_button_2=35;

int button_state_1=0;
int button_state_2=0;

void setup(){
  pinMode(output_led, OUTPUT);
  pinMode(INPUT_button_1, INPUT);
  pinMode(INPUT_button_2, INPUT);
}
void loop(){
  button_state_1= digitalRead(INPUT_button_1);
  button_state_2= digitalRead(INPUT_button_2);
  if (button_state_1 == HIGH && button_state_2 == HIGH){
    digitalWrite(output_led, HIGH);
    delay(10);
  }
  else if (button_state_1 == LOW && button_state_2 ==LOW ){
     digitalWrite(output_led, HIGH);
    delay(10);
  }
   else {
    digitalWrite(output_led, LOW);
  }
}