제출 #78347

#제출 시각아이디문제언어결과실행 시간메모리
78347win11905보물 찾기 (CEOI13_treasure2)C++11
0 / 100
2 ms616 KiB
#include "treasure.h" #include <bits/stdc++.h> using namespace std; int pref[105][105]; bool have[105][105]; void findTreasure (int N) { int m = N >> 1; for(int i = N; i; --i) for(int j = N; j; --j) { if(i > m and j > m) pref[i][j] = countTreasure(1, 1, i, j); if(i <= m and j > m) pref[i][j] = pref[N][j] - countTreasure(i+1, 1, N, j); if(i > m and j <= m) pref[i][j] = pref[i][N] - countTreasure(1, j+1, i, N); if(i <= m and j <= m) pref[i][j] = pref[N][j] + pref[i][N] - pref[N][N] - countTreasure(i+1, j+1, N, N); } for(int i = 1; i <= N; ++i) for(int j = 1; j <= N; ++j) if(pref[i][j] - pref[i-1][j] - pref[i][j-1] + pref[i-1][j-1]) Report(i, j); }
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