Submission #258639

#	Time	Username	Problem	Language	Result	Execution time	Memory
258639		dolphingarlic	Treasure (different grader from official contest) (CEOI13_treasure2)	C++14	56 / 100	1 ms	384 KiB

treasure

#include "treasure.h"

int pref[101][101];

void findTreasure(int N) {
    for (int i = N; i; i--) for (int j = N; j; j--) {
        if (i > N / 2) {
            if (j > N / 2) pref[i][j] = countTreasure(1, 1, i, j);
            else pref[i][j] = pref[i][N] - countTreasure(1, j + 1, i, N);
        } else {
            if (j > N / 2) pref[i][j] = pref[N][j] - countTreasure(i + 1, 1, N, j);
            else pref[i][j] = countTreasure(1, 1, i, j);
        }
    }
    for (int i = N; i; i--) for (int j = N; j; j--) {
        if (pref[i][j] + pref[i - 1][j - 1] - pref[i - 1][j] - pref[i][j - 1]) Report(i, j);
    }
}

• Subtask 1: 56 / 100