/*
 *Com S 207
 *Hw 5
 *LeapYear.java
 */

import java.util.Scanner;

public class LeapYear{

	public static void main(String[] args){

	Scanner scan = new Scanner(System.in);
	
	System.out.print("Please a year: ");
	int year = scan.nextInt();
	
	while (year < 1582){
		System.out.print("You need to enter a year after 1582.\nPlease enter again: ");
		year = scan.nextInt();
	}
	
	if( (year % 4 == 0)){// year is divisible by 4
		if( year % 100 == 0){ // year is divisible by 100
			if( year % 400 == 0) //year is also divisible by 400, eg 2000
				System.out.println("This is a leap year");
			else//year is not divisible by 400, eg 1900
				System.out.println("This is NOT a leap year");
			}
		else
			System.out.println("This is a leap year");
	}
	else //year is not divible by 4
		System.out.println("This is NOT a leap year");

	}
}