import java.util.Scanner;

    public class WeekdayCalculator
    {
        public static void main( String[] args )
        {
        Scanner keyboard = new Scanner(System.in);

        System.out.println("Welcome to Mr. Mitchell's fantastic birth-o-meter!");
        System.out.println();
        System.out.println("All you have to do is enter your birth date, and it will");
        System.out.println("tell you the day of the week on which you were born.");
        System.out.println();
        System.out.println("Some automatic tests....");
        System.out.println("12 10 2003 => " + weekday(12,10,2003));
        System.out.println(" 2 13 1976 => " + weekday(2,13,1976));
        System.out.println(" 2 13 1977 => " + weekday(2,13,1977));
        System.out.println(" 7  2 1974 => " + weekday(7,2,1974));
        System.out.println(" 1 15 2003 => " + weekday(1,15,2003));
        System.out.println("10 13 2000 => " + weekday(10,13,2000));
        System.out.println();

        System.out.println("Now it's your turn!  What's your birthday?");
        System.out.print("Birth date (mm dd yyyy): ");
        int mm = keyboard.nextInt();
        int dd = keyboard.nextInt();
        int yyyy = keyboard.nextInt();

        System.out.println("You were born on "+weekday(mm,dd,yyyy));
    }


    public static String weekday( int mm, int dd, int yyyy )
    {
        int yy, total, remainder;
        String date = "";

        yy =  yyyy - 1900;


        is_leap(yyyy);

            if (is_leap(yyyy)==true && mm==1 || mm==2)
            total = yy/4 + yy + dd + month_offset(mm)-1;
            else
            total = yy/4 + yy + dd + month_offset(mm);

        remainder = total%7;
        weekday_name(remainder);
        date = weekday_name(remainder) +", " + month_name(mm) +" "+dd+", " + yyyy;
        return date;
    }

    public static int month_offset( int month )
    {
        int result;

        if (month==1)
        result=1;
        else if (month==2)
        result=4;
        else if (month==3)
        result=4;
        else if (month==4)
        result=0;
        else if (month==5)
        result=2;
        else if (month==6)
        result=5;
        else if (month==7)
        result=0;
        else if (month==8)
        result=3;
        else if (month==9)
        result=6;
        else if (month==10)
        result=1;
        else if (month==11)
        result=4;
        else if (month==12)
        result=6;
        else
        result=-1;

        return result;
    }

        public static String weekday_name( int day )
    {
        String result;

        if (day==1)
        result="Monday";
        else if (day==2)
        result="Tuesday";
        else if (day==3)
        result="Wednesday";
        else if (day==4)
        result="Thursday";
        else if (day==5)
        result="Friday";
        else if (day==6)
        result="Saturday";
        else if (day==0)
        result="Sunday";
        else
        result="Error";

        return result;
    }

        public static String month_name( int month )
    {
        String result;

        if (month==1)
        result="January";
        else if (month==2)
        result="February";
        else if (month==3)
        result="March";
        else if (month==4)
        result="April";
        else if (month==5)
        result="May";
        else if (month==6)
        result="June";
        else if (month==7)
        result="July";
        else if (month==8)
        result="August";
        else if (month==9)
        result="September";
        else if (month==10)
        result="October";
        else if (month==11)
        result="November";
        else if (month==12)
        result="December";
        else
        result="Error";

        return result;
    }


    public static boolean is_leap( int year )
    {

        boolean result;

        if ( year%400 == 0 )
            result = true;
        else if ( year%100 == 0 )
            result = false;
        else if ( year%4 == 0 )
            result = true;
        else
            result = false;

        return result;
    }
}