import java.util.Scanner;public class Main { static int N,M,count; static int[] dir = {1, -1}; //방향 static char[][] Nary; static boolean[][] visited; public static void input() { Scanner scan = new Scanner(System.in); N = scan.nextInt(); M = scan.nextInt(); Nary = new char[N][M]; visited = new boolean[N][M]; scan.nextLine(); for(int..