int minldr = 600;

int btn = 4;
int led1 = 2;
int led2 = 3;
int ldr = A0;
void setup() {
  // put your setup code here, to run once:
pinMode(btn, INPUT_PULLUP);
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
int ldrsig = analogRead(ldr); //vec je bolj svetlo
Serial.println(ldrsig);
if (ldrsig < minldr && digitalRead(btn)==LOW){
  digitalWrite(led1, HIGH);
  digitalWrite(led2, HIGH);
}
else{
  digitalWrite(led1, LOW);
  digitalWrite(led2, LOW);  
}
}