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제출 #1123449

#제출 시각아이디문제언어결과실행 시간메모리
1123449njoop삶의 질 (IOI10_quality)C++17
0 / 100
1 ms576 KiB
#include "quality.h" #include <bits/stdc++.h> using namespace std; vector<vector<int>> v; int r, c, h, w; bool check(int val) { vector<vector<int>> n(r+10, vector<int>(c+10, 0)); for(int i=0; i<r; i++) { for(int j=0; j<c; j++) { if(v[i][j] <= val) n[i+1][j+1] = 1; } } for(int i=1; i<=r; i++) { for(int j=1; j<=c; j++) { n[i][j] += n[i-1][j] + n[i][j-1] - n[i-1][j-1]; } } for(int i=h; i<=r; i++) { for(int j=w; j<=c; j++) { if(n[i][j]-n[i-h][j]-n[i][j-w]+n[i-h][j-w] > (h*w)/2) return true; } } return false; } int rectangle(int R, int C, int H, int W, int Q[3001][3001]) { r = R; c = C; h = H; w = W; for(int i=0; i<r; i++) { for(int j=0; j<c; j++) { v[i][j] = Q[i][j]; } } int lo=1, hi=r*c+1; while(lo < hi) { int mid = (lo+hi)/2; if(check(mid)) { hi = mid; } else { lo = mid+1; } } return lo; }
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