SRM 706 DIV 2 500 Selling Fruits

class SellingFruits {
public:
    int maxDays(int x, int f, int d, int p) {
        int ret = d / x;
        if (ret < f) return ret;
        ret = f;
        d -= f * x;
        ret += (d / (x + p));
        return ret;
    }
}