#include<bits/stdc++.h>
using namespace std;
using ll = long long;

int main(){
    cin.tie(nullptr);
    ios::sync_with_stdio(false);

    int n,m;
    cin>>n>>m;
    vector<vector<ll>> a(n,vector<ll>(m));
    for(int i = 0;i<n;i++) for(int j = 0;j<m;j++) cin>>a[i][j];
    vector<ll> cnt(m,0);
    for(int i = 0;i<n;i++) for(int j = 0;j<m;j++) cnt[j] += a[i][j];
    vector<ll> cost;
    for(int i = 0;i<n;i++){
        ll now = 0;
        for(int j = 0;j<m;j++) now += cnt[j] * a[i][j];
        cost.push_back(now);
    }
    ll ans = 0;
    sort(cost.rbegin(),cost.rend());
    for(int i = 0;i<cost.size();i++) {
        if(i%2==0) ans += cost[i];
        else ans -= cost[i];
    }
    cout<<ans<<endl;
}