제출 #246375

#제출 시각아이디문제언어결과실행 시간메모리
246375thecodingwizard보물 찾기 (CEOI13_treasure2)C++11
90 / 100
5 ms384 KiB
#include <bits/stdc++.h>
#include "treasure.h"
using namespace std;

void findTreasure (int n) {
    int ps[n+1][n+1];
    for (int i = 0; i <= n; i++) for (int j = 0; j <= n; j++) ps[i][j] = 0;
    for (int i = n; i >= 1; i--) {
        for (int j = n; j >= 1; j--) {
            if (i>=n/2&&j>=n/2) {
                ps[i][j] = countTreasure(1, 1, i, j);
            } else if (i >= n/2) {
                ps[i][j] = ps[i][n] - countTreasure(1, j+1, i, n);
            } else if (j >= n/2) {
                ps[i][j] = ps[n][j] - countTreasure(i+1, 1, n, j);
            } else {
                ps[i][j] = ps[i][n] + ps[n][j] + countTreasure(i+1, j+1, n, n) - ps[n][n];
            }
        }
    }
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= n; j++) {
            if (ps[i][j] - ps[i-1][j] - ps[i][j-1] + ps[i-1][j-1] == 1) Report(i, j);
        }
    }
}
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