제출 #511030

#제출 시각아이디문제언어결과실행 시간메모리
511030tabr삶의 질 (IOI10_quality)C++17
0 / 100
1 ms332 KiB
#include <bits/stdc++.h> using namespace std; #ifdef tabr #include "library/debug.cpp" #else #define debug(...) #endif int rectangle(int r, int c, int h, int w, int q[3001][3001]) { int low = 0; int high = r * c; while (high - low > 1) { int mid = (high + low) / 2; int ok = 0; vector<vector<int>> pref(r + 1, vector<int>(c + 1)); for (int i = 0; i < r; i++) { for (int j = 0; j < c; j++) { pref[i + 1][j + 1] = pref[i + 1][j] + pref[i][j + 1] - pref[i][j] + (q[i][j] >= mid); } } for (int i = 0; i <= r - h; i++) { for (int j = 0; j <= c - w; j++) { if (pref[i + h][j + w] - pref[i][j + 1] - pref[i + h][j] + pref[i][j] > h * w / 2) { ok = 1; } } } if (ok) { low = mid; } else { high = mid; } } return low; }
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