제출 #519632

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
519632		drkarlicio2107	삶의 질 (IOI10_quality)	C++14	0 / 100	1 ms	588 KiB

quality

#include <bits/stdc++.h>
int pref [3010][3010]; int l [3001][3001];
int rectangle(int R, int C, int H, int W, int Q[3001][3001]){ 
	int lo=0, hi=R*C;
	for (int i=0; i<R; i++){
		for (int j=0; j<C; j++) l [i+1][j+1]=Q[i][j];
	}
	while(lo<hi){
		int mid=(lo+hi+1)/2;
		long long int ans=1e9;
		int da=0;
		for (int i=1; i<R+1; i++){
			for (int j=1; j<C+1; j++){
				if(l[i][j]<mid) l[i][j]=-1;
				if(l[i][j]>mid) l[i][j]=1;
				pref[i][j]=pref[i-1][j]+pref[i][j-1]-pref[i-1][j-1]+l[i][j];
				if(i>=H && j>=W) if (pref[i][j]-pref[i-H][j]-pref[i][j-W]+pref[i-H][j-W]<0) da=1;
			}
		}
		if(da) hi=mid-1;
		else lo=mid;
	}
	return lo;
}

컴파일 시 표준 에러 (stderr) 메시지

quality.cpp: In function 'int rectangle(int, int, int, int, int (*)[3001])':
quality.cpp:10:17: warning: unused variable 'ans' [-Wunused-variable]
   10 |   long long int ans=1e9;
      |                 ^~~

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