The Pyramid Of King Djoser

#include <iostream>
#include <cmath>

using namespace std;

int main() {
    int basis, size, step = 0;
    cin >> basis;

    double increment;
    cin >> increment;

    double stone = 0, marble = 0, lapis = 0, gold = 0;

    for (int i = basis; i > 0; i -= 2) {
        size = i * i;
        step++;
        if (i < 3) {
            gold = size * increment;
        }
        else {
            stone += (i - 2) * (i - 2) * increment;
            double decorate = (i * 4 - 4) * increment;
            if (step % 5 != 0) {
                marble += decorate;
            }
            else {
                lapis += decorate;
            }
        }
    }

    cout << "Stone required: " << ceil(stone) << endl
        << "Marble required: " << ceil(marble) << endl
        << "Lapis Lazuli required: " << ceil(lapis) << endl
        << "Gold required: " << ceil(gold) << endl
        << "Final pyramid height: " << floor(step * increment) << endl;

    return 0;
}