#include <fstream>
using namespace std;
ifstream f("flip.in");
ofstream g("flip.out");
int a[20][20],n,m,i,j,s1=0,s2=0,s3=0,s4=0,sl=0,sc=0;
int main()
{

f>>n>>m;
for (i=1;i<=n;i++)
    for (j=1;j<=m;j++)
        f>>a[i][j];
i=1;
while(i<=n)
    {
     for (j=1;j<=m;j++)
        s1=s1+a[i][j];
     for (j=1;j<=m;j++)
        s2=s2-a[i][j];
     if (s1>=s2) sl=sl+s1;
     else sl=sl+s2;
     s1=0;s2=0;i++;
    }
j=1;
while(j<=m)
    {
     for (i=1;i<=n;i++)
        s3=s3+a[i][j];
     for (i=1;i<=n;i++)
        s4=s4-a[i][j];
     if (s3>=s4) sc=sc+s3;
     else sc=sc+s4;
     s3=0;s4=0;j++;
    }
if (sl>=sc) g<<sl;
else g<<sc;
f.close();
g.close();
return 0;
}