import java.util.Scanner;

public class Leap
  /** Rules for leap year:
    * if the year# is evenly divisible by 400 then it is a leap year.
    * If the year is evenly divible by 4 and not divisible by 100.
    * For example, 2000 is evenly divisible 400. It is a leap year.
    * 2016 is evenly divisible by 4, but not 100.
    * For example, 1900 is not a leap year (it is not divisible by
    * 400 and is by 4 but also 100).
    * */
{
  public static void main(String[] args)
  {
    int year=1900;
    boolean isLeapYear=false;
     // goal: a single condition to test this 
    if (year%400==0 || year%4==0 && year%100!=0)
        isLeapYear=true;
    if (isLeapYear)
        System.out.println(year + " is a leap year.");
    else
        System.out.println(year + " is NOT a leap year.");
  }
}