//designed by yyw
//
#include <iostream>
#include<iomanip>
//setfill() 填充
//setw() 宽
//setprecision()显示数字位数

using namespace  std;

class calendar
{
public:
    void Menu_present()
    {
        cout<<"This is a calendar"<<endl;
        cout<<endl;
        cout<<"                Menu"<<endl;
        cout<<"1.Search the date is which day of the week"<<endl;
        cout<<"2.Check the calendar for a certain year"<<endl;
        cout<<endl;
        cout<<"Exit: input 88 with \"ENTER\""<<endl;
    }// 菜单显示

    void open_calendar()//  主菜单
    {
//        Menu_present();
        int menu_number=0;
        while(menu_number!=88)
        {
            Menu_present();
            cout<<"Please input the number before the option "<<endl;
            while(1) {
                cin >> menu_number;
                if (!cin.fail())break;
                if (cin.fail()) {
                    cin.clear();
                    cin.sync();
                    cout << "Your input is illegal" << endl;
                    cout << "please input the number correctly" << endl;
                    cout << "other char is not allowed" << endl;
                    continue;
                }
            }
            switch(menu_number)
            {
                case 1:  M_Search();
                    break;
                case 2:  Check();
                    break;
//                case 3:
//                    break;
                case 88:
                    cout<<"Good bye,have a good day!"<<endl;
                    break;
                default:
                    cout<<"Invalid input"<<endl;
                    cout<<"please input the number correctly,and input it again"<<endl;
            }// case 2
        }

    }
    void M_Search()
    {
        int i=1,j=1,k=1;
        int year;
        int month;
        int day;
        cout<<"Please input the year "<<endl;
        while(1) {
            cin >> year;
//            if(year<0){
//                //cin.clear();
//                cin.sync();
//                cout<<"year wrong"<<endl;
//                continue;
//            }
            if(!cin.fail()){
                if(year<0){
                    cin.clear();
                    cin.sync();
                    cout<<"year wrong"<<endl;
                    continue;
                }
                break;
            }
            if (cin.fail()) {
                cin.clear();
                cin.sync();
                cout << "Your input is illegal" << endl;
                cout << "please input the number correctly" << endl;
                cout << "other char is not allowed" << endl;
                continue;
            }
            //if(year<1){cin.clear();cin.sync();cout<<"year wrong"<<endl;continue;}
        }
        cout<<"Please input the month "<<endl;
        while(1) {
            cin >> month;
            if(!cin.fail()){
                if(month<1||month>12){
                    cin.clear();
                    cin.sync();
                    cout<<"month wrong"<<endl;
                    continue;
                }
                break;
            }
            if (cin.fail()) {
                cin.clear();
                cin.sync();
                cout << "Your input is illegal" << endl;
                cout << "please input the number correctly" << endl;
                cout << "other char is not allowed" << endl;
                continue;
            }
        }
        cout<<"Please input the day "<<endl;
        while(1) {
            cin >> day;
//            if(day<1||day> month_judge(year,month)){cin.clear();cin.sync();cout<<"day wrong"<<endl;continue;}
            if(!cin.fail()){
                if(day<1||day> month_judge(year,month)){cin.clear();cin.sync();cout<<"day wrong"<<endl;continue;}
                break;
            }
            if (cin.fail()) {
                cin.clear();
                cin.sync();
                cout << "Your input is illegal" << endl;
                cout << "please input the number correctly" << endl;
                cout << "other char is not allowed" << endl;
                continue;
            }
        }
        if(year==1582&&month==10&&(day>4&&day<15))cout<<"This is none day"<<endl;
        else cout<<day_of_week (year,month,day)<<endl;
        if(year_judge(year))cout<<"This year is Leap year"<<endl;
        else cout<<"This year is Non-leap year"<<endl;

    }//  查某一天是星期几 写完了
    void Check()
    {
        int i=1,j=1;
        int year;
        cout<<"Please input the year "<<endl;
        while(1) {
            cin >> year;
            if(!cin.fail()){
                if(year<0){
                    cin.clear();
                    cin.sync();
                    cout<<"year wrong"<<endl;
                    continue;
                }
                break;
            }
            if (cin.fail()) {
                cin.clear();
                cin.sync();
                cout << "Your input is illegal" << endl;
                cout << "please input the number correctly" << endl;
                cout << "other char is not allowed" << endl;
                continue;
            }
        }//cin year
        int c;
        aaa:
        cout<<"Please select the way you want view"<<endl;
        cout<<"1.send out every month with 1*12"<<endl;
        cout<<"2.send out every month with 2*6"<<endl;
        cout<<"Input the number before the option"<<endl;
        while(1) {
            cin >> c;
            if(!cin.fail())break;
            if (cin.fail()) {
                cin.clear();
                cin.sync();
                cout << "Your input is illegal" << endl;
                cout << "please input the number correctly" << endl;
                cout << "other char is not allowed" << endl;
                continue;
            }
        }//cin 选择
        switch(c)
        {
            case 1:
                send1_12(year);
                break;
            case 2:
                send2_6(year);
                break;
            default:
                cout<<"Invalid input"<<endl;
                cout<<"Please Input the number before the option correctly"<<endl;
                goto aaa;
                break;
        }
    }// 输出那一年的日期
private:
    int year_judge(int year)
    {

        if(year%4==0&&year%100!=0||year%400==0)
        {
            return 1;
        }
        return 0;

    }// 1润 0平
    int month_judge(int year,int month){
        if(!(year==1582&&month==10)) {
            if (month == 2) {
                if (year_judge(year) == 1) {
                    return 29;
                } else return 28;
            }
            if (month == 4 || month == 6 || month == 9 || month == 11) {
                return 30;
            } else {
                return 31;
            }
        }else{return 31;}
    }// 返回多少天
    int day_of_week(int year,int month,int day){
        if(month<3)month+=12,year-=1;
        int f;
            if(year>1582||((year==1582&&month>10)||(year==1582&&month==10&&day>4)))//geli
            {
                f=(day+2*month+3*(month+1)/5+year+year/4-year/100+year/400+1)%7;
                if(f==0)f=7;
                return f;
            }else//ruli
             {
                 f=(day+2*month+3*(month+1)/5+year+year/4-year/100+year/400+4)%7;
                 if(f==0)f=7;
                return f;
             }
    }// 返回星期几
    void send1_12(int year){

        for(int i=1;i<=12;i++)// 12个月
        {

            cout<<setw(20)<<"month "<<i<<endl;
            cout<<"Sun  Mon  Tue  Wed  Thu  Fri  Sat  "<<endl;
            int k1=1-day_of_week(year,i,1);
            for(int r=1;r<=6;r++){
                for(int j=1;j<=7;j++,k1++){
                    if(k1<=0){
                        cout<<"     ";
                    }else{
                        if(k1<= month_judge(year,i)) {
                            if(year==1582&&i==10&&k1==5)k1+=10;
                            cout << setw(3) << k1 << "  ";
                        }else{
                            cout<<"     ";
                        }
                    }
                }
                cout<<endl;
            }
        }
    };//完成
    void send2_6(int year){
        cout<<setw(33)<<"Happy "<<year<<'!'<<endl;
        for (int i = 1; i <= 12; i += 2)// 12个月
        {

            cout << setw(20) << "month " << i << setw(35) << "month" << i + 1 << endl;
            cout << "Sun  Mon  Tue  Wed  Thu  Fri  Sat    " << "Sun  Mon  Tue  Wed  Thu  Fri  Sat  " << endl;

            int k1 = 1 - day_of_week(year, i, 1), k2 = 1 - day_of_week(year, i + 1, 1);

            for (int j = 1; j <= 6; j++) {
                for (int r = 1; r <= 7; r++, k1++) {
                    if (k1 <= 0)cout << "     ";
                    else {
                        if (k1 <= month_judge(year, i)) {
                            cout << setw(3) << k1 << "  ";
                        } else cout << "     ";
                    }
                }
                cout<<"  ";

                for (int r = 1; r <= 7; r++, k2++) {
                    if (k2 <= 0)cout << "     ";
                    else {
                        if (k2 <= month_judge(year, i + 1)) {
                            if(year==1582&&(i+1)==10&&k2==5)k2+=10;
                            cout << setw(3) << k2 << "  ";
                        } else cout << "     ";
                    }
                }
                cout << endl;
            }
        }
    };// 完成
};
int main() {
    class calendar r;
    r.open_calendar();
    return 0;
}