int button1 =4;
int button2 = 2;
int Led =14;
bool KondisiAwal1 = false;
bool KondisiAwal2 = true;

void setup(){
  pinMode(button1, INPUT);
  pinMode(button2, INPUT);
  pinMode(Led, OUTPUT);
}
void loop(){
  int bacabutton1= digitalRead(button1);
  int bacabutton2= digitalRead(button2);

  if (bacabutton1 ==1 && !KondisiAwal1 ){
    digitalWrite(Led, HIGH);
    KondisiAwal1 = true;
    delay(3000);
    digitalWrite(Led, LOW);
  }
  if (bacabutton2 ==1 && KondisiAwal2){
    digitalWrite(Led, HIGH);
    KondisiAwal2 = false;
    delay(3000);
    digitalWrite(Led, LOW);
  }
}