#include <bits/stdc++.h>
using namespace std;
#define F first
#define S second
#define FOR(i,a,b) for (auto i = (a); i <= (b); ++i)
#define NFOR(i,a,b) for(auto i = (a); i >= (b); --i)
#define all(x) (x).begin(), (x).end()
#define sz(x) int(x.size())
#define mp(i,a) make_pair(i,a)
#define pb(a) push_back(a)
#define bit(x,b) (x&(1LL<<b))
typedef int lli;
typedef pair <lli,lli> ii;
typedef pair <lli,ii> iii;
typedef vector <lli> vi;
int r,c,h,w,arr[3001][3001],pr[3001],p[3001][3001];
int check(int m)
{
int s=0,ch=0;
for(int i=0;i<r;++i)
{
p[i+1][c-w+1]=0;
for(int j=c-w;j<c;++j)
{
if(arr[i][j]<m)
p[i+1][c-w+1]+=-1;
else if(arr[i][j]>m)
p[i+1][c-w+1]+=1;
}
if(i>=h)
s-=p[i-h+1][c-w+1];
s+=p[i+1][c-w+1];
if(i>=h-1)
{
pr[i]=s;
if(s<=0)
ch=1;
}
}
if(ch)
return(ch);
for(int i=0;i<r;++i)
{
for(int j=0;j<c;++j)
{
p[i+1][j+1]=p[i][j+1];
if(arr[i][j]<m)
p[i+1][j+1]+=-1;
else if(arr[i][j]>m)
p[i+1][j+1]+=1;
}
}
for(int i=h-1;i<r;++i)
{
for(int j=c-w-1;j>=0;--j)
{
pr[i]=pr[i]-(p[i+1][j+w+1]-p[i-h+1][j+w+1])+p[i+1][j+1]-p[i+1-h][j+1];
if(pr[i]<=0)
return ch=1;
}
}
return(ch);
}
int rectangle(int R, int C, int H, int W, int Q[3001][3001])
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
r=R;
c=C;
h=H;
w=W;
for(int i=0;i<r;++i)
for(int j=0;j<c;++j)
arr[i][j]=Q[i][j];
int le=1,ri=r*c,ans=r*c;
while(le<=ri)
{
int mi=(le+ri)/2;
if(check(mi))
{
ri=mi-1;
ans=mi;
}
else
{
le=mi+1;
}
}
return(ans);
}
