自己另辟蹊径想的新思路 果然好像还是不太行呀
import java.util.Scanner;
public class Main {
static int T;//样例组数
static int n;//矩阵大小
static int[] X = {
0,1,0,-1};
static int[] Y = {
1,0,-1,0};
static int[] X1 = {
1,0,-1,0};
static int[] Y1 = {
0,-1,0,1};
static int flag = 0;
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);