#include "bits/stdc++.h"
using namespace std;

int main() {
    ifstream cin("flip.in");
    ofstream cout("flip.out");
    int n,m;
    long s = 0;
    long r = 0;
    long c = 0;
    cin >> n >> m;
    
    vector<vector<int>> v(n, vector<int> (m, 0));
    for (int i = 0; i < n; i++){
        for(int j = 0; j < m; j++){
            cin >> v[i][j];
        }
    }
    
    long r2 = 0;
    for (int i = 0; i < n; i++){
        long r1 = 0;
        for(int j = 0; j < m; j++){
            r1 -= v[i][j];
        }
        if (i == 0 || r2 < r1) {
            r2 = r1;
            r = i;
        }
    }
    
    long c2 = 0;
    for (int i = 0; i < m; i++){
        long c1 = 0;
        for (int j = 0; j < n; j++){
            if ( j == r) {
                c1 += v[j][i];
            } else {
                c1 -= v[j][i];
            }
        }
        if (i == 0 || c2 < c1) {
            c2 = c1;
            c = i;
        }
    }
    
    s = 2 * v[r][c];
    for (int i = 0; i < n; i++){
        for(int j = 0; j < m; j++){
            if (i == r || j == c) {
                s -= v[i][j];
            } else
                s += v[i][j];
        }
    }
    cout << s;
    
    return 0;
}