#include <iostream>
using namespace std;
int ms[] = {31,28,31,30,31,30,31,31,30,31,30,31};
int msly[] = {31,29,31,30,31,30,31,31,30,31,30,31};

class Cal{
	public:
		int date(int year,int month);
		int total(int year,int month,int day);
		void PrintCalendar(int year,int month);
};

int main(){
    Cal cal;
	int year, month;
	cout << "Ãâ·ÂÇÒ ¿¬¿ùÀ» ÀÔ·ÂÇϼ¼¿ä. : ";
	cin >> year >> month;
	cout << endl << endl;
	cout << year << "³â " << month << "¿ù ´Þ·ÂÀÔ´Ï´Ù." <<endl;
	cal.PrintCalendar(year,month);
	cout << endl << endl;
	system("pause");
	return EXIT_SUCCESS;
}

int Cal::date(int year, int month){
	if (((year%4==0)&&(year%100!=0))||(year%400==0)){return msly[month-1];}
	else{return ms[month-1];}
}

int Cal::total(int year, int month, int day){
	int temp = 365*(year-1) + (year/4 - year/100 + year/400);
	for (int m=1;m<month ;m++ ){temp += date(year,m);}
	temp += day;
	return temp;
}

void Cal::PrintCalendar(int year, int month){
	int start = total(year,month,1)%7 ;
	cout << "SUN\tMON\tTUE\tWED\tTHU\tFRI\tSAT" << endl;
	cout << "---\t---\t---\t---\t---\t---\t---" << endl;
	if (start != 0){
		for (int i = 0; i<start; i++){cout << "\t";}
	}
	for (int i = 1; i<=date(year,month); i++){
        if (i<10){cout<<" ";}
        cout << " " << i << "\t";
		if ((start+i)%7 == 0){cout << endl;}
	}
}