int lampuungu = 9;
int lampuhijau =8;
int lampubiru =7;
int lampukuning =6;

int pbtm =2;

int pbtstdm =0;
void setup() {
  // put your setup code here, to run once:
pinMode(lampuungu, OUTPUT);
pinMode(lampuhijau, OUTPUT);
pinMode(lampubiru, OUTPUT);
pinMode(lampukuning, OUTPUT);

pinMode(pbtm, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(lampuungu, HIGH);
digitalWrite(lampuhijau, LOW);
digitalWrite(lampubiru, HIGH);
delay(1000);
digitalWrite(lampuungu, LOW);
digitalWrite(lampuhijau, HIGH);
digitalWrite(lampubiru, HIGH);
delay(1000);
pbtstdm = digitalRead(pbtm);

if (pbtstdm == HIGH){
digitalWrite(lampukuning, HIGH);
}

else{
  digitalWrite(lampukuning, HIGH);
}
}