#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <string.h>
#include <iostream>
#include <sstream>
#include <algorithm>
#include <stack>
#include <vector>
#include <queue>
#include <map>
#include <set>
#include <deque>
#include <functional>
#define _USE_MATH_DEFINES
#include <math.h>
#include <complex>
using namespace std;

#include <atcoder/all>
using namespace atcoder;

#define REP(i,n) for(int i = 0; i < (int)n; i++)
#define RREP(i,n) for(int i = (int)n-1; i >= 0; i--)
#define LREP(i,n) for(LL i = 0; i < (LL)n; i++)

#define Vi vector<int>
#define Vl vector<long long>
#define LP pair<long long ,long long>
#define P pair<int, int>
#define T3 tuple<LL, LL, LL>
#define T4 tuple<LL, LL, LL, LL>
#define INF 1000000007
#define SIZE	310
#define MOD 1000000007
typedef long long LL;

LL N, M;
LL A[SIZE][SIZE];
LL C[SIZE];

int main() {
	cin >> N >> M;
	REP(i, N) REP(j, M) cin >> A[i][j];

	REP(j, M) {
		LL c = 0;
		REP(i, N) {
			c += A[i][j];
		}
		C[j] = c;
	}

	Vl X;
	REP(i, N) {
		LL cost = 0;
		REP(j, M) {
			cost += A[i][j] * C[j];
		}
		X.push_back(cost);
	}
	sort(X.begin(), X.end(), greater<LL>());
	LL ans = 0;
	REP(i, N) {
		if (i % 2 == 0) ans += X[i];
		else ans -= X[i];
	}
	cout << ans << endl;
}