void getWord(int n) {

    switch (n)
    {
    case 20: std::cout << "Water";
        break;
    case 12: std::cout << "Universe";
        break;
    case 8: std::cout << "Air";
        break;
    case 6: std::cout << "Earth";
        break;
    case 4: std::cout << "Fire";
        break;
    case 1: std::cout << "Plasma";
        break;
    default:
        break;
    }
}

void numberToElement(int num) {
    int arr[] = {20, 12, 8, 6, 4, 1 };

    for (size_t i = 0; i < 6 ;)
    {
        //std::cout << " ";
        if (num < arr[i])
            ++i;
        else
        {
            num -= arr[i];
            getWord(arr[i]);
        }
    }
}

void printNumbersWithElements(int a, int b) {
    for (size_t i = a; i <= b; i++)
    {
        numberToElement(i);
        std::cout << " ";
    }
}