package Q6;

import java.util.*;

public class WeekDay {
  public static final int JANUARY = 0;
  public static final int FEBRUARY = 0;
  public static final int MARCH = 0;
  public static final int APRIL = 0;
  public static final int MAY = 0;
  public static final int JUNE = 0;
  public static final int JULY = 0;
  public static final int AUGUST = 0;
  public static final int SEPTEMBER = 0;
  public static final int OCTOBER = 0;
  public static final int NOVEMBER = 0;
  public static final int DECEMBER = 0;

  public static final int SUNDAY = 0;
  public static final int MONDAY = 1;
  public static final int TUESDAY = 2;
  public static final int WEDNESDAY = 3;
  public static final int THURSDAY = 4;
  public static final int FRIDAY = 5;
  public static final int SATURDAY = 6;
  private static final String[] DAYS =
      new String[] {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};
  private static final int[] MONTHS = new int[] {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};

  public String getWeekDay(int day, int month, int year) {
    return DAYS[daysSinceEpoch(day, month, year) % 7];
  }

  private int daysSinceEpoch(int day, int month, int year) {
    int days = (year - 1900) * 365;
    days += (year - 1900) / 4;
    if (isLeapYear(year) && (month == 1 || month == 2)) days -= 1;
    days += daysThisYearUpTo(day, month);
    return days;
  }

  private boolean isLeapYear(int year) {
    return year % 4 == 0;
  }

  private int daysThisYearUpTo(int day, int month) {
    int days = 0;
    for (int i = 1; i < month; i++) days += daysInMonth(i);
    return days + day;
  }

  private int daysInMonth(int month) {
    return MONTHS[month - 1];
  }

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

    System.out.println("Enter year:");
    int year = in.nextInt();

    System.out.println("Enter month:");
    int month = in.nextInt();

    System.out.println("Enter day:");
    int day = in.nextInt();

    System.out.println(new WeekDay().getWeekDay(day, month, year));
  }
}