Submission #155049

#	Time	Username	Problem	Language	Result	Execution time	Memory
155049		kitoha	Treasure (different grader from official contest) (CEOI13_treasure2)	C++14	100 / 100	2 ms	504 KiB

treasure

#include "treasure.h"

const int MAXN = 150;
int sum[MAXN][MAXN];

void findTreasure(int N) {

	for (int i = N; i >= 1; i--) {
		for (int j = N; j >= 1; j--) {
			if (i > N / 2 && j > N / 2) {
				sum[i][j] = countTreasure(1, 1, i, j);
			}
			else if (i > N / 2 && j <= N / 2) {
				sum[i][j] = sum[i][N] - countTreasure(1, j+1, i, N);
			}
			else if (i <= N / 2 && j > N / 2) {
				sum[i][j] = sum[N][j] - countTreasure(i + 1, 1, N, j);
			}
			else if (i <= N / 2 && j <= N / 2) {
				sum[i][j] = sum[N][j] + sum[i][N] + countTreasure(i + 1, j + 1, N, N) - sum[N][N];
			}
		}
	}

	for (int i = 1; i <= N; i++) {
		for (int j = 1; j <= N; j++) {
			int tmp = sum[i][j] - sum[i][j - 1] - sum[i - 1][j] + sum[i - 1][j - 1];
			if (tmp) {
				Report(i, j);
			}
		}
	}
}

• Subtask 1: 100 / 100