[백준 Java] 2차원 배열 - 2563번: 색종이

 

 

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

public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        StringTokenizer st;

        int[][] arr = new int[100][100];
        int n = Integer.parseInt(br.readLine());
        int count = 0;

        for (int i = 0; i < n; i++) {
            st = new StringTokenizer(br.readLine());
            int w = Integer.parseInt(st.nextToken());
            int h = Integer.parseInt(st.nextToken());

            for (int j = 0; j < 10; j++) {
                for (int k = 0; k < 10; k++) {
                    arr[w+j][h+k] = 1;
                }
            }
        }

        for (int i = 0; i < 100; i++) {
            for (int j = 0; j < 100; j++) {
                if (arr[i][j] == 1) {
                    count++;
                }
            }
        }

        bw.write(String.valueOf(count));

        br.close();
        bw.flush();
        bw.close();
    }
}