Кто может помогите пожалуйста !!!!!

 #include  

#include  

#include  

#include  

using namespace std; 

int input(istream& inp, const char* msg) { 

    cout > value; 

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

    return value; 

} 

class Friday_the_13th { 

public: 

    Friday_the_13th() : pos(5), day(2), month(1), year(1970) {} 

    string str()const { 

        string date = day < 10 ? "0" : ""; 

        date += to_string(day) + '/'; 

        if (month < 10) date += '0'; 

        date += to_string(month) + '/' + to_string(year); 

        return date; 

    } 

    int current_pos() { 

        return pos; 

    } 

    int current_day() { 

        return day; 

    } 

    vector get(const int days)const { 

        static const auto npos = 5; 

        static const auto nday = 13; 

        vector box; 

        if (pos == npos && day == 13) box.push_back(*this); 

        auto a = *this; 

        for (auto i = days; i != 0; --i) { 

            --a; 

            if (a.current_pos() == npos && a.current_day() == nday) { 

                box.push_back(a); 

            } 

        } 

        auto b = *this; 

        for (auto i = 0; i < days; ++i) { 

            ++b; 

            if (b.current_pos() == npos && b.current_day() == nday) { 

                box.push_back(b); 

            } 

        } 

        sort(box.begin(), box.end()); 

        return box; 

    } 

private: 

    int pos; 

    int day; 

    int month; 

    int year; 

    inline static const int months[]{  

        0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31  

    }; 

    friend istream& operator>>(istream& inp, Friday_the_13th& fr) { 

        fr.day = input(inp, "Day: "); 

        fr.month = input(inp, "Month: "); 

        fr.year = input(inp, "Year: "); 

        return inp; 

    } 

    friend const Friday_the_13th& operator++(Friday_the_13th& i) { 

        if (i.day < i.months[i.month]) ++i.day; 

        else if (i.day == i.months[i.month]) { 

            if (++i.month == size(i.months)) { 

                i.month = 1; 

                ++i.year; 

            } 

            i.day = 1; 

        } 

        if (i.pos < 7) ++i.pos; 

        else i.pos = 1; 

        return i; 

    } 

    friend const Friday_the_13th& operator--(Friday_the_13th& i) { 

        if (i.day > 1) --i.day; 

        else { 

            if (--i.month == 0) { 

                i.month = 12; 

                --i.year; 

            } 

            i.day = i.months[i.month]; 

        } 

        if (i.pos > 1) --i.pos; 

        else i.pos = 7; 

        return i; 

    } 

    friend bool operator> date; 

    auto days = input(cin, "Days: "); 

    auto dates = date.get(days); 

    puts(" List:"); 

    for (const auto& date : dates) cout

 #include 

#include 



int main() {

    int day = 1;

    int month = 1;

    int year = 2021;

    int monthes[] = {

        31, 28, 31, 30, 31, 30, 

        31, 31, 30, 31, 30, 31

    };

    int N;

    std::cout > N;

    int cday = 12;    // Текущий день

    int cmonth = 0;   // Текущий месяц

    int num_days = 0; // Число дней

    while (cday < N) {

        if (cday % 7 == 0) {

            num_days++;

            std::cout