#include <iostream>
#include <cstdlib>
#include "Date.h"

int main(int argc, char **argv) {
	int d,m,y;
	if (argc != 4) { 
		cerr << "Usage : "<<argv[0]<<" day month year\n";
		return 1;
	}

	d = atoi(argv[1]);
	m = atoi(argv[2]);
	y = atoi(argv[3]);

	if (!(d>0&&m>0&&y>0)) {
		cerr << "day, month and year must be positive integers\n";
		return 2;
	}

	Date date(d,m,y);
	
	cout << date.day_of_week() << endl;
}