const unsigned int LED_BIT0 = 10;
const unsigned int LED_BIT1 = 11;
const unsigned int LED_BIT2 = 12;
const unsigned int BUTTON_PIN = 7;

int currentValue = 0;
int oldValue = 0;

void outputResult(const long result) {
    digitalWrite(LED_BIT0, result & B001);
    digitalWrite(LED_BIT1, result & B010);
    digitalWrite(LED_BIT2, result & B100);
}

void setup() {
    pinMode(LED_BIT0, OUTPUT);
    pinMode(LED_BIT1, OUTPUT);
    pinMode(LED_BIT2, OUTPUT);
    pinMode(BUTTON_PIN, INPUT);
    randomSeed(analogRead(A0));
}

void loop() {
    currentValue = digitalRead(BUTTON_PIN);

    if (currentValue != oldValue && currentValue == HIGH) {
        outputResult(random(1, 7));
        delay(50);
    }

    oldValue = currentValue;
}