int led1 = 8;
int led2 = 11;
int nilaipb1;
int nilaipb2;
int button1 = 13;
int button2 = 12;

void setup() {
  // put your setup code here, to run once:
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(button1, INPUT);
  pinMode(button2, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  nilaipb1=digitalRead(button1);
  if(nilaipb1==HIGH) {
    digitalWrite(led1, HIGH);
    delay(200);
    digitalWrite(led1, LOW);
    digitalWrite(led2, HIGH);
    delay(200);
  } 
  else {
    digitalWrite(led1, LOW);
    digitalWrite(led2, LOW);
  }
  nilaipb2=digitalRead(button2);
  if(nilaipb2==LOW) {
    digitalWrite(led1, LOW);
  } else {
    digitalWrite(led2, HIGH);
  }
}