#include <iostream>
#include <fstream>
using namespace std;
ifstream f ("flip.in");
ofstream out("flip.out");
int main()
{
    int n, m, a[16][16],  s1, s2, s0, sl, sc, s ;
    f>>n>>m;
    for (int i=1; i<=n; i++)

        for (int j=1; j<=m; j++)

            f>>a[i][j];

    s=0;s0=0;sl=0;s1=0;s2=0;sc=0;
    for(int i=1; i<=n; i++)
    {
        s0=0;
        for (int j=1; j<=m; j++)
            s0=s0+a[i][j];
        if(s0<0)
        {
            s0=s0*-1;
            s1=s1+s0;
        };
        sl=sl+s0;
    };
    for (int j=1; j<=m; j++)
    {
        s0=0;
        for(int i=1; i<=n; i++)
            s0=s0+a[i][j];
        if(s0<0)
        {
            s0=s0*-1;
            s2=s2+s0;
        };
        sc=sc+s0;
    };
    if(sc>sl) s=s1*2+sc;
    if(sl>sc) s=s2*2+sl;
    out<<s;
    return 0;
}