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제출 #1110980

#제출 시각아이디문제언어결과실행 시간메모리
1110980Zflop삶의 질 (IOI10_quality)C++14
100 / 100
2080 ms140304 KiB
#include <bits/stdc++.h> using namespace std; int sum[3001][3001]; int rectangle(int R, int C, int H, int W, int Q[3001][3001]) { int l = 1,r = R * C; int ans = R * C; auto get = [&] (int i,int j) { if (i + 1 < H) return -1; if (j + 1 < W) return -1; int a = sum[i][j]; if (i - H >= 0) a -= sum[i - H][j]; if (j - W >= 0) a -= sum[i][j - W]; if (i - H >= 0 && j - W >= 0) a += sum[i - H][j - W]; return a; }; auto work = [&](int x) { for (int i = 0; i < R;++i) for (int j = 0; j < C;++j) sum[i][j] = 0; for (int i = 0; i < R;++i) for (int j = 0; j < C;++j) { if (Q[i][j] > x) --sum[i][j]; if (Q[i][j] < x) ++sum[i][j]; if (i) sum[i][j] += sum[i - 1][j]; if (j) sum[i][j] += sum[i][j - 1]; if (i && j) sum[i][j] -= sum[i - 1][j - 1]; } for (int i = 0; i < R;++i) for (int j = 0; j < C;++j) if (get(i,j) >= 0) return true; return false; }; while (l <= r) { int mid = (l + r) / 2; if (work(mid)) { ans = mid; r = mid - 1; } else { l = mid + 1; } } return ans; }
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