float calculateLnFromFactorial(int factorial) {
    float result = 0;

    for (int i = 1; i <= factorial; i++) {
        result += log(i);
    }

    return result;
}

void calculateEntropia() {
    float a = calculateLnFromFactorial(CUBES_NUMBER);
    float b = 0;

    for (int i = 0; i < 6; i++) {
        b += calculateLnFromFactorial(cubesWithGivenNumber[i]);
    }

    entropia = a - b;
}