#include<fstream.h>


ifstream f("flip.in");
ofstream g("flip.out");

long int a[17][17],c[17],l[17],s1,s2,s;
int n,m;

int main()
{
    int i,j;
    f>>n>>m;
    
    for(i=1;i<=n;i++)
        for(j=1;j<=m;j++)
        {
            f>>a[i][j];
            l[i]=l[i]+a[i][j];
            c[j]=c[j]+a[i][j];
        }    
    
    for(i=1;i<=n;i++)
    {
        if(l[i]<0) l[i]=-l[i];
        s+=l[i];
    }    
         
    for(j=1;j<=m;j++)
    {
        if(c[j]<0) c[j]=-c[j];
        s+=c[j];
    }    
     
/*    if(s1>s2) g<<s1<<" ";
         else g<<s2<<" ";
*/
    g<<s;
/*  for(i=1;i<=n;i++)
    g<<l[i]<<" ";
        
    g<<"\n";

    for(j=1;j<=m;j++)
    g<<c[j]<<" ";
*/  
    f.close();
    g.close();
}