啊，推等差快推傻了，这题目好烦

Java 代码

import java.util.Scanner;

public class 螺旋折线 {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int x = input.nextInt();
        int y = input.nextInt();
        if (x == 0 && y == 0){
            System.out.println(0);
            return;
        }
        if (y > 0 && y >= Math.abs(x)){
            int l = y;
            long start = 2 + (4 * l + 2) * (l - 1);
            int add = x + y;
            long res = start + add;
            System.out.println(res);
        }else if (x > 0 && x >= Math.abs(y)){
            int l = x;
            long start = 2 + (4 * l + 2) *( l - 1)  + 2 * l;
            long add = l - y;
            long res = start + add;
            System.out.println(res);
        }else if (y <= 0 && Math.abs(y) >= Math.abs(x + 1)){
            int l = -y;
            long start = (4 * l + 2) * l;
            long add = l - x;
            long res = start + add;
            System.out.println(res);
        }else {
            int l = -x;
            long start = 1 + 4 * l *(l -1);
            long add = y - x - 1;
            long res = start + add;
            System.out.println(res);
        }
    }
}