Submission #699868

#	Time	Username	Problem	Language	Result	Execution time	Memory
699868		vjudge1	Quality Of Living (IOI10_quality)	C++14	Compilation error	0 ms	0 KiB

quality

#include<bits/stdc++.h>
using namespace std;
const int N=1010;
int n,m,h,w;
int a[N][N],sum[N][N];
int get(int SX,int SY,int EX,int EY){return sum[EX][EY]-sum[SX-1][EY]-sum[EX][SY-1]+sum[SX-1][SY-1];}
int check(int mid)
{
	for(int i=1;i<=n;i++)
		for(int j=1;j<=m;j++)
			sum[i][j]=(a[i][j]>mid?-1:1)+sum[i-1][j]+sum[i][j-1]-sum[i-1][j-1];
	for(int i=1;i+h-1<=n;i++)
		for(int j=1;j+w-1<=m;j++)
			if(get(i,j,i+h-1,j+w-1)>0)return 1;
	return 0;
}
int main()
{
	scanf("%d%d%d%d",&n,&m,&h,&w);
	for(int i=1;i<=n;i++)
		for(int j=1;j<=m;j++)
			scanf("%d",&a[i][j]);
	int l=0,r=n*m;
	while(l<r)
	{
		int mid=(l+r)>>1;
		if(check(mid))r=mid;
		else l=mid+1;
	}
	printf("%d\n",l);
	return 0;
}

Compilation message (stderr)

quality.cpp: In function 'int main()':
quality.cpp:19:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |  scanf("%d%d%d%d",&n,&m,&h,&w);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
quality.cpp:22:9: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |    scanf("%d",&a[i][j]);
      |    ~~~~~^~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/ccZxHRNO.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccKznSTS.o:quality.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccZxHRNO.o: in function `main':
grader.cpp:(.text.startup+0xe9): undefined reference to `rectangle(int, int, int, int, int (*) [3001])'
collect2: error: ld returned 1 exit status