구름톤 챌린지 9일차

문제

https://level.goorm.io/exam/195691/%ED%8F%AD%ED%83%84-%EA%B5%AC%ED%98%84%ED%95%98%EA%B8%B0-2/quiz/1

구름LEVEL

 

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 n = Integer.parseInt(st.nextToken());
		int k = Integer.parseInt(st.nextToken());
		
		String [][] board = new String [n][n];
		int [][] answer = new int [n][n];
		
		for(int i=0;i<n;i++){
				st = new StringTokenizer(br.readLine());
			for(int j=0;j<n;j++){
			
				board[i][j] = st.nextToken();
			}
		}
		
		int dy [] = {0,0,-1,0,1};
		int dx [] = {0,1,0,-1,0};
		
		for(int i=0;i<k;i++){
			st = new StringTokenizer(br.readLine());
			int y = Integer.parseInt(st.nextToken())-1;
			int x = Integer.parseInt(st.nextToken())-1;
			
			for(int t =0;t<5;t++){
				int ny = y + dy[t];
				int nx = x + dx[t];
				if(ny<0||nx <0||ny>=n||nx>=n) continue;
				if(board[ny][nx].equals("@")){
					answer[ny][nx] = answer[ny][nx]+ 2;
				}
				else if(board[ny][nx].equals("0")){
					answer[ny][nx] += 1;
				}
				
			}
		}
		
		int max = 0;
		
		for(int i=0;i<n;i++){
				for(int j=0;j<n;j++){
					if( answer[i][j] > max)
						max = answer[i][j];
				}
			}
			

		
		
		System.out.println(max);
	}
}