import java.util.Scanner; // 2563색종이 public class Main { public static void main(String[] args) { Scanner in = new Scanner(System.in); int pprCnt = in.nextInt(); int res = 0; int[][] arr = new int[100][100]; for (int i = 0; i < pprCnt; i++) { int x = in.nextInt(); int y = in.nextInt(); for (int j = x; j < x+10; j++) { for (int k = y; k < y+10; k++) { arr[j][k] = 1; } } } in.close(); for (int i =..