[백준] 봄버맨 - JAVA

문제

https://www.acmicpc.net/problem/16918

16918번: 봄버맨

 

코드

import java.io.*;
import java.util.*;

class Main {	
	
	public static void main(String args[]) throws Exception{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));		
		StringTokenizer st = new StringTokenizer(br.readLine());
		
		int r = Integer.parseInt(st.nextToken());
		int c = Integer.parseInt(st.nextToken());
		int n = Integer.parseInt(st.nextToken());
		
		char board[][] = new char [r][c];
		
		for(int i=0;i<r;i++) {
			String str = br.readLine();
			for(int j=0;j<c;j++) {
				board[i][j] = str.charAt(j);
			}
		}
		
		
		for(int t=2;t<=n;t++) {
			if(t%2 == 0) {
				for(int i=0;i<r;i++) {
					for(int j=0;j<c;j++) {
						if(board[i][j] == 'O') {
							board[i][j] = 'X';
						}
						else {
							board[i][j] = 'O';
						}
					}
				}
				
			}
			else {
				int dx [] = {1, 0, -1, 0};
				int dy [] = {0, 1, 0, -1};
				
				for(int i=0;i<r;i++) {
					for(int j=0;j<c;j++) {
						if(board[i][j] == 'X') {
							board[i][j] = '.';
							for(int k=0;k<4;k++) {
								int nx = i + dx[k];
								int ny = j + dy[k];
								
								if(nx < 0 || ny < 0 || nx >= r || ny >= c) continue;
								if(board[nx][ny] == 'X') continue;
								board[nx][ny] = '.';
							}
						}
					}
				}
				
			}
		}
		
		if(n%2==0) {
			for(int i=0;i<r;i++) {
				for(int j=0;j<c;j++) {
					System.out.print("O");
				}
				System.out.println();
			}
		}
		else {
			for(int i=0;i<r;i++) {
				for(int j=0;j<c;j++) {
					System.out.print(board[i][j]);
				}
				System.out.println();
			}
		}
		

	}
	
}