제출 #481659

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
481659		SlavicG	삶의 질 (IOI10_quality)	C++17	40 / 100	5075 ms	2252 KiB

quality

#include"quality.h"
#include "bits/stdc++.h"
using namespace std;
 
#define ll long long
 
#define       forn(i,n)              for(int i=0;i<n;i++)
#define          all(v)              v.begin(), v.end()
#define         rall(v)              v.rbegin(),v.rend()
 
#define            pb                push_back
#define          sz(a)               (int)a.size()
 
const int N = 3001;
int rectangle(int n, int m, int a, int b, int c[3001][3001]){
    int ans = INT_MAX;
    for(int i = 0;i + a - 1 < n;++i){
        for(int j = 0;j + b - 1 < m;++j){
            int l = 1, r = n * m;
            while(l <= r){
                int mid = l + r >> 1;
                int cnt_smaller = 0, cnt_greater = 0;

                for(int x = i;x < i + a;++x){
                    for(int y = j;y < j + b;++y){
                        if(c[x][y] < mid)++cnt_smaller;
                        else if(c[x][y] > mid)++cnt_greater;
                    }
                }

                if(cnt_smaller == cnt_greater){
                    ans = min(ans, mid);
                    r = mid - 1;
                }else if(cnt_smaller > cnt_greater){
                    r = mid - 1;
                }else l = mid + 1;
            }
        }
    }
    return ans;
}   

컴파일 시 표준 에러 (stderr) 메시지

quality.cpp: In function 'int rectangle(int, int, int, int, int (*)[3001])':
quality.cpp:21:29: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   21 |                 int mid = l + r >> 1;
      |                           ~~^~~

• Subtask 1: 20 / 20
• Subtask 2: 20 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 20