백준 2563 색종이

설명

 

코드

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.StringTokenizer;

public class Main {

    // 1531
    public static void main(String[] args) throws IOException {
        process();
    }

    private static void process() throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));

        int loop = Integer.parseInt(br.readLine());
        int[][] arr = new int[101][101];
        for (int i = 0; i < loop; i++) {
            StringTokenizer st = new StringTokenizer(br.readLine());
            int x = Integer.parseInt(st.nextToken());
            int y = Integer.parseInt(st.nextToken());
            int xEnd = Math.min(x + 9, 100);
            int yEnd = Math.min(y + 9, 100);
            for (int j = y; j <= yEnd; j++) {
                for (int k = x; k <= xEnd; k++) {
                    arr[j][k] = 1;
                }
            }

        }

        int cnt = 0;
        for (int i = 1; i < 101; i++) {
            for (int j = 1; j < 101 ; j++) {
                if(arr[i][j] == 1) {
                   cnt++;
                }
            }
        }

        bw.write(cnt + "");
        bw.flush();
        bw.close();
        br.close();
    }
}