#define crveno 3
#define zuto 4
#define zeleno 5
#define tipkalo 8

void setup() {
  // put your setup code here, to run once:
  pinMode(crveno, OUTPUT);
  pinMode(zuto, OUTPUT);
  pinMode(zeleno, OUTPUT);
  pinMode(tipkalo, INPUT_PULLUP);
}

void loop() {
  // put your main code here, to run repeatedly:

}