#include <fstream>
using namespace std;
ifstream in ("flip.in");
ofstream out ("flip.out");

int main()
{
    int n, t=0, m, i, j, a[100][100], s=0, r=0;
    in >> n >> m;
    for (i=0; i<n; i++)
    {
        for (j=0; j<m; j++)
        {
            in >> a[i][j];
            s = s + a[i][j];
        }
        if(s<0)
        {
            s=0-s;
        }
        t = t + s;
        s = 0;
    }
    for (i=0; i<m; i++)
    {
        for (j=0; j<n; j++)
        {
            r = r + a[i][j];
        }
        t = r + t;
        r = 0;
    }
    out << t+r;
    return 0;
}