#include<fstream.h>
#include<conio.h>
int main(void)
{
	clrscr();
	int n,m,j,i;
	long int mat[16][16], st, s,smax;
	ifstream in("flip.in");
	in>>n>>m;st=0;
	for(i=1;i<=n;i++)
	       for(j=1;j<=m;j++)
		{
			in>>mat[i][j];cout<<mat[i][j]<<" ";
			st=st+mat[i][j];
		}
	in.close();
	cout<<st;
	smax=-st;s=0;
	for(i=1;i<=n;i++)
	{
		for(j=1;j<=m;j++)
		{
			s=s-mat[i][j];
			if(s>smax)smax=s;
		}
	}
	for(j=1;j<=m;j++)
	{
		for(i=1;i<=n;i++)
		{
			s=s-mat[i][j];
			if(s>smax)smax=s;
		}
	}
	ofstream out("flip.out");
	out<<smax;
	out.close();
	return 0;
}