#include<iostream>
#include<string>
#include<iomanip>
#include<cmath>
#include<vector>
#include<algorithm>
#include<utility>

using namespace std;

#define int long long
#define endl "\n"

constexpr long long INF = (long long)1e18;
constexpr long long MOD = 1'000'000'007; 

struct fast_io {
	fast_io(){
		std::cin.tie(nullptr);
		std::ios::sync_with_stdio(false);
	};
} fio;

signed main(){
	cout<<fixed<<setprecision(10);
	
	vector<int> sum;
	vector<int> score;
	vector<vector<int>> A;
	int N, M;
	int ans = 0;
	
	cin>>N>>M;
	
	A.resize(N, vector<int>(M));
	sum.resize(M);
	score.resize(N);
	
	for(int i = 0; i < N; i++){
		for(int j = 0; j < M; j++){
			cin>>A[i][j];
			sum[j] += A[i][j];
		}
	}
	
	for(int i = 0; i < N; i++){
		for(int j = 0; j < M; j++){
			score[i] += sum[j] * A[i][j];
		}
	}
	
	sort(score.begin(), score.end(), greater<int>());
	
	
	for(int i = 0; i < score.size(); i++){
		if(i%2) ans -= score[i];
		else ans += score[i];
	}
	
	cout<<ans<<endl;
	
	return 0;
}