https://www.acmicpc.net/problem/2447 package BKD_0x0B_Recursion;import java.io.*;public class BOJ_2447 { static char[][] arr; public static void main(String[] args) throws IOException{ BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out)); int N = Integer.parseInt(br.readLine..
