蓝桥-跑步锻炼

#include <iostream>
using namespace std;
struct date {
    int flag;
    int year, month, day;
    void add() {
        day++;
        flag = ++flag % 7;
        if (day < 29) {
            return;
        }
        if ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0) {
            if (month == 2 && day == 30) {
                month++;
                day = 1;
            } else if ((month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 ||
                        month == 12) && day == 32) {
                month++;
                day = 1;
            } else if ((month == 4 || month == 6 || month == 9 || month == 11) && day == 31) {
                month++;
                day = 1;
            }
            if (month == 13) {
                year++;
                month = 1;
            }
        } else {
            if (month == 2 && day == 29) {
                month++;
                day = 1;
            } else if ((month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 ||
                        month == 12) && day == 32) {
                month++;
                day = 1;
            } else if ((month == 4 || month == 6 || month == 9 || month == 11) && day == 31) {
                month++;
                day = 1;
            }
            if (month == 13) {
                year++;
                month = 1;
            }
        }
    }
};
int main() {
    int cnt = 0;
    date d;
    d.year = 2000;
    d.month = 1;
    d.day = 1;
    d.flag = 6;
    while (!(d.year == 2020 && d.month == 10 && d.day == 2)) {
        if (d.day == 1 || d.flag == 1) {
            cnt++;
        }
        cnt++;
        d.add();
    }
    cout << cnt << endl;
    return 0;
}