package main;import java.io.*;import java.util.*;public class Main { public static void main(String[] args) throws IOException { //입력 배열 생성 BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); String[] firstLine = br.readLine().split(" "); int y = Integer.parseInt(firstLine[0]); int x = Integer.parseInt(firstLine[1]); int[][] arr ..