제출 #310787

#제출 시각아이디문제언어결과실행 시간메모리
310787Fischer보물 찾기 (CEOI13_treasure2)C++14
100 / 100
1 ms512 KiB
#include <bits/stdc++.h> #include "treasure.h" using namespace std; const int maxn = 110; int acc[maxn][maxn]; bool mat[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) acc[i][j] = countTreasure(i+1, j+1, n, n) - acc[n][n] + acc[i][n] + acc[n][j]; else if (i <= n/2) acc[i][j] = acc[n][j] - countTreasure(i+1, 1, n, j); else if (j <= n/2) acc[i][j] = acc[i][n] - countTreasure(1, j+1, i, n); else acc[i][j] = countTreasure(1, 1, i, j); } } for (int i = 1; i <= n; ++i) { for (int j = 1; j <= n; ++j) { mat[i][j] = acc[i][j] - acc[i-1][j] - acc[i][j-1] + acc[i-1][j-1]; } } for (int i = 1; i <= n; ++i) { for (int j = 1; j <= n; ++j) { if (mat[i][j]) Report(i, j); } } }
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