#include <bits/stdc++.h>  // clang-format off
using Int = long long;
#define REP_(i, a_, b_, a, b, ...) for (Int i = (a), lim##i = (b); i < lim##i; i++)
#define REP(i, ...) REP_(i, __VA_ARGS__, __VA_ARGS__, 0, __VA_ARGS__)
struct SetupIO { SetupIO() { std::cin.tie(nullptr), std::ios::sync_with_stdio(false), std::cout << std::fixed << std::setprecision(13); } } setup_io;
#ifndef dump
#define dump(...)
#endif  // clang-format on

/**
 *    author:  knshnb
 *    created: Fri May 22 22:59:44 JST 2020
 **/

template <class T, class S> T make_vec(S x) { return x; }
template <class T, class... Ts> auto make_vec(size_t n, Ts... ts) {
    return std::vector<decltype(make_vec<T>(ts...))>(n, make_vec<T>(ts...));
}

signed main() {
    Int n, m;
    std::cin >> n >> m;
    auto a = make_vec<Int>(n, m, 0);
    std::vector<Int> sum(m);
    REP(i, n) REP(j, m) std::cin >> a[i][j], sum[j] += a[i][j];
    std::vector<Int> score(n);
    REP(i, n) REP(j, m) score[i] += a[i][j] * sum[j];
    std::sort(score.rbegin(), score.rend());
    Int ans = 0;
    REP(i, n) { ans += i % 2 ? -score[i] : score[i]; }
    std::cout << ans << std::endl;
}