#include <iomanip>
#include <iostream>
#include <cmath>
#include <cstdlib>

using namespace std;


const string day_names[7] = {"Saturday", "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday"};

const string day_short[7] = {"Su", "Mo", "Tu", "We", "Th", "Fr", "Sa"};
const int days_month[12] = {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};

bool is_leapyear(int year)
{

	if(((year%4==0 && year%100 != 0) || (year%400 == 0)) || year < 1537) {
		return true;
	}
	return false;


}


int wday_jul(int day, int month, int year) {

	int hjul;

	hjul = day;
	hjul += floor((month+1)*26/10);
	hjul += year % 100;
	hjul += floor((year%100)/4);
	hjul += 5;
	hjul -= floor(year/100);
	hjul %= 7;

	// swap
	return (hjul+6)%7;
}



int wday_greg(int day, int month, int year) {


	int hgreg;

	hgreg = day;
	hgreg += floor((month+1)*26/10);
	hgreg += year % 100;
	hgreg += floor((year%100)/4);
	hgreg += floor(floor(year/100)/4);
	hgreg -= 2*(floor(year/100));
	hgreg %= 7;

	// swap
	return (hgreg+6)%7;

}


int weekday(int day, int month, int year) {

	int orig_year 	= year;
	int orig_month = month;

	if(month==1) {
		month = 13;
		year--;
	} else if(month==2) {
		month = 14;
		year--;
	}


	if(orig_year == 1582)
	{
		if(orig_month == 10)
		{
			if(day <= 4)
				return wday_jul(day, month, year);
			if(day >= 15)
				return wday_greg(day,month, year);
			else
				return wday_greg(15, month, year);

		}
		else if(orig_month < 10)
		{
			return wday_jul(day, month, year);
		}
		else
		{
			return wday_greg(day, month, year);
		}
	}
	else if(orig_year < 1582)
	{
		return wday_jul(day, month, year);
	}
	else
	{
		return wday_greg(day, month, year);
	}



}


int* days_of_month(int month, int year) {

	int* days = new int[31];

	for(int i=0;i<31;i++) { days[i] = 0; }

	if(year < 1582 || (year == 1582 && month < 10)) {
		for(int i=0;i<days_month[month-1];i++) {
			days[i] = i+1;
		}
	}
	else if(year > 1582 || (year==1582 && month > 10)) {

		// feb has 28 days
		if(month == 2 && !is_leapyear(year)) {
			for(int i=0;i<28;i++) {
				days[i] = i+1;
			}
		}
		else
		{
			for(int i=0;i<days_month[month-1];i++) {
				days[i] = i+1;
			}
		}
	}
	else
	{
		for(int i=0;i<days_month[month-1];i++) {

			if((i+1) <= 4 || (i+1) >= 15) {
				days[i] = i+1;
			}
			else
			{
				days[i] = 0;
			}
		}
	}

	return days;

}

void print_cal(int day, int month, int year) {


	for(int i=0;i<7;i++) {
		cout<<setw(3)<<left<<day_short[i];
	}

	cout<<endl;

	int wday;
	int mday;

	int* days = days_of_month(month, year);

	for(int i=0;i<31;i++) {

		mday = days[i];

		if(mday == 0) { continue; }

		wday = weekday(mday, month, year);

		if(mday==1)
		{
			for(int j=0;j<wday;j++) {
				cout<<setw(3)<<"   ";
			}
		}


		if(mday == day)
		{
			cout<<"\033[37;40m"<<setw(3)<<mday<<"\033[0m";
		}
		else
		{
			cout<<setw(3)<<mday;
		}


		if(wday==6) {
			cout<<endl;
		}

	}

	cout<<endl;


}

int main(int argc, char* argv[])
{

	int year;
	int month;
	int day;

	day = atoi(argv[1]);
	month = atoi(argv[2]);
	year = atoi(argv[3]);


	print_cal(day, month, year);


return 0;
}