#include <iostream>
#include <fstream>
using namespace std;



int main() {
	int N, M, a[50][50],minl=INT_MAX,minc=INT_MAX,sfinal=0,smax=0;
	ifstream f("flip.in");
	ofstream g("flip.out");
	f >> N>>M;
	for (int i = 0;i < N;i++)
	{
		for (int j = 0;j < M;j++)
		{
			f >> a[i][j];
		}
		
	}
for (int i = 0;i < N;i++)
{
	int s = 0;
	for (int j = 0;j < M;j++)
	{
		s += a[i][j];
	}
	if (s < minl) minl = s;
}
for (int i = 0;i < M;i++)
{
	int s2 = 0;
	for (int j = 0;j < N;j++)
	{
		s2 += a[j][i];
	}
	if (s2 < minc) minc = s2;
}
for(int i = 0;i < N;i++)
{
	for (int j = 0;j < M;j++)
	{
		smax += a[i][j];
	}
}
sfinal = smax + 2 * (-minl) + 2 * (-minc);
g << sfinal;
	
	
	
}