#include <bits/stdc++.h>
using namespace std;
#define LL long long
LL ans;
int n,m,c,a[1100][1100],b[1100][1100],mi,mj,mx=-1;
long long f(int x,int y)
{
	LL ans=0;
	for(int i=0;i<c;i++)
	{
		ans+=b[i+y][x+c-1]-b[i+y][x-1];
		//printf("ans=%lld,b[%d][%d]-b[%d][%d]=%d\n",ans,i+y,x+c-1,i+y,x-1,b[i+y][x+c-1]-b[i+y][x-1]);
	}
	return ans;
}
int main()
{
	cin >> n >> m >> c;
	for(int i=1;i<=n;i++)
	{
		for(int j=1;j<=m;j++)
		{
			cin >> a[i][j];
			b[i][j]=b[i][j-1]+a[i][j];
		}
	}
	for(int i=1;i+c<=n;i++)
	{
		for(int j=1;j+c<=m;j++)
		{
			ans=f(j,i);
			//printf("%d,%d=%d\n",i,j,ans);
			if(ans>mx)
			{
				mx=ans;
				mi=i;
				mj=j;
			}
		}

	}
	printf("%d %d",mi,mj);
	return 0;
}