package myPackage;
import java.util.Scanner;
public class Main {
public static void main(String[]args) {
Scanner in=new Scanner(System.in);
int N=in.nextInt();
char[]ch=new char[N*N];
int flag=0,t=0;
while(t
package myPackage;
import java.util.Scanner;
public class Main {
public static void main(String[]args) {
Scanner in=new Scanner(System.in);
int N=in.nextInt();
char[]ch=new char[N*N];
int flag=0,t=0;
while(t名师互学网 版权所有 (c)2021-2022 ICP备案号：晋ICP备2021003244-6号
