#include <bits/stdc++.h>
using namespace std;
using ll = long long;
template <class T, class U> using Pa = pair<T, U>;
template <class T> using vec = vector<T>;
template <class T> using vvec = vector<vec<T>>;

int main(){
    cin.tie(0);
    ios::sync_with_stdio(false);
    int N,M;
    cin >> N >> M;
    vvec<ll> A(N,vec<ll>(M));
    vec<ll> S(M);
    for(int i=0;i<N;i++) for(int j=0;j<M;j++){
        cin >> A[i][j];
        S[j] += A[i][j];
    }
    vec<ll> B(N);
    for(int i=0;i<N;i++){
        ll now = 0;
        for(int j=0;j<M;j++) now += S[j]*A[i][j];
        B[i] = now;
    }
    sort(B.begin(),B.end(),greater<ll>());
    ll ans = 0;
    for(int i=0;i<N;i++){
        if(i%2==0) ans += B[i];
        else ans -= B[i];
    }
    cout << ans << "\n";
}