//The following three lines are needed to get a number from the keyboard.
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class FourWayLeap {
	public static void main(String[] args) {
		System.out.print("What year is this? ");
		int year = getInt();

		if (year % 400 == 0) {
			System.out.println(year + " is a leap year.");
		} else if (year % 100 == 0) {
			System.out.println(year + " is not a leap year.");
		} else if (year % 4 == 0) {
			System.out.println(year + " is a leap year.");
		} else {
			System.out.println(year + " is not a leap year.");
		}
	}

	//The following 16 lines are needed to get a number from the keyboard.
	private static BufferedReader reader =
		new BufferedReader(new InputStreamReader(System.in));
	private static int getInt() {
		try {
			return Integer.parseInt(reader.readLine());
		}
		catch (IOException e) {
			System.err.println("Couldn't receive input: "
				+ e.getMessage());
		}
		catch (NumberFormatException e) {
			System.err.println(e.getMessage()
				+ ", the characters were not a number.");
		}
		return 0;
	}
}