85分求调！！！

#include<bits/stdc++.h>
using namespace std;
int n,m,c,a,p[1003][1003],x,y,d,t;
int main()
{
	cin>>n>>m>>c;
	for (int i=1;i<=n;i++)
		for (int j=1;j<=m;j++)
		{
			cin>>a;
			p[i][j]=p[i-1][j]+p[i][j-1]-p[i-1][j-1]+a;
		}
	for (int i=c;i<=n;i++)
		for (int j=c;j<=m;j++)
		{
			t=p[i][j]-p[i-c][j]-p[i][j-c]+p[i-c][j-c];
			if (t>=d)
			{
				x=i-c;
				y=j-c;
				d=t;
			}
		}
	cout<<x+1<<" "<<y+1;
}