Помогите написать программу

 #include  

#include  

#include  

 

using namespace std; 

 

double input(istream& inp, const string msg) { 

    cout > value; 

    inp.ignore(0x1000, '\n'); 

    return value; 

} 

 

class Detail { 

public: 

    Detail() 

        : h(0), r(0), b(0), g(0) {} 

    Detail(const double h, const double r) 

        : h(h), r(r), b(0), g(0) {} 

    void density(const double value) { 

        g = value; 

    } 

    void thickness(const double value) { 

        b = value; 

    } 

    double weight()const { 

        const auto ov = volume(r); 

        const auto iv = volume(r - b); 

        const auto v = ov - iv; 

        return v * g; 

    } 

private: 

    double h; 

    double r; 

    double b; 

    double g; 

    double volume(const double rad)const { 

        static const auto pi = 3.1415926535897932; 

        return pi * pow(rad, 2) * h; 

    } 

}; 

 

int main() { 

    cout > n; 

    auto details = new Detail[n]; 

    if (details == nullptr) exit(1); 

    const auto h = input(cin, "H: "); 

    const auto r = input(cin, "R: "); 

    Detail detail(h, r); 

    fill(details, details + n, detail); 

    for (size_t i = 0; i < n; ++i) { 

        auto txt = to_string(i + 1) + ": "; 

        details[i].density(input(cin, "G" + txt)); 

        details[i].thickness(input(cin, "B" + txt)); 

    } 

    const auto p = input(cin, "P: "); 

    size_t count = 0; 

    auto sum_weight_all = 0.0; 

    auto sum_weight = 0.0; 

    for (size_t i = 0; i < n; ++i) { 

        auto weight = details[i].weight(); 

        if (weight