جاده کشی

Main.java

import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);       
        int n = scanner.nextInt();

        int row = n / 2;
        int col = (n % 2) + row;
         
        System.out.print((row + 1) * (col + 1));
    }
}