// Modified from C10 Ex5

#include <stdlib.h>
#include <stdio.h>

int date_to_day(int year, int month, int day) {
	if (month < 3) {
		month += 12;
		year -= 1;
	}

	return ((13*month+3)/5 + day + year + year/4 - year/100 + year/400) % 7;
}

void print_day_of_week(int day) {
	switch (day) {
		case 0: printf("Monday\n"); break;
		case 1: printf("Tuesday\n"); break;
		case 2: printf("Wednesday\n"); break;
		case 3: printf("Thursday\n"); break;
		case 4: printf("Friday\n"); break;
		case 5: printf("Saturday\n"); break;
		case 6: printf("Sunday\n"); break;
	}
}

int main(int argc, char *argv[]) {
	int rc, year, month, day, nd;

	if ( argc != 4 )
	{
		printf ("USAGE: %s year month day\n",argv[0]);
		exit (0);
	} 

	sscanf(argv[1],"%d",&year);
	sscanf(argv[2],"%d",&month);
	sscanf(argv[3],"%d",&day);

	nd = date_to_day(year, month, day);
	print_day_of_week(nd);

	return 0;
}