Java代码
import java.util.*;
public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int w = scanner.nextInt();
int m = scanner.nextInt();
int n = scanner.nextInt();
m--;
n--;
int x1 = m / w, x2 = n / w;
int y1 = m % w, y2 = n % w;
if (x1 % 2 != 0) y1 = w - 1 - y1;
if (x2 % 2 != 0) y2 = w - 1 - y2;
System.out.println(Math.abs(x1 - x2) + Math.abs(y1-y2));
scanner.close();
}
}