#include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include // Yay!! #define endl codeforces // macros for iterator #define ALL(v) std::begin(v), std::end(v) #define ALLR(v) std::rbegin(v), std::rend(v) // alias using ll = std::int64_t; using ull = std::uint64_t; using pii = std::pair; using tii = std::tuple; using pll = std::pair; using tll = std::tuple; template using vec = std::vector; template using vvec = vec>; // variadic min/max template const T& var_min(const T &t) { return t; } template const T& var_max(const T &t) { return t; } template const T& var_min(const T &t, const Tail&... tail) { return std::min(t, var_min(tail...)); } template const T& var_max(const T &t, const Tail&... tail) { return std::max(t, var_max(tail...)); } // variadic chmin/chmax template void chmin(T &t, const Tail&... tail) { t = var_min(t, tail...); } template void chmax(T &t, const Tail&... tail) { t = var_max(t, tail...); } // multi demension array template struct multi_dim_array { using type = std::array::type, Head>; }; template struct multi_dim_array { using type = std::array; }; template using mdarray = typename multi_dim_array::type; // fill container template void fill_seq(T &t, F f, Args... args) { if constexpr (std::is_invocable::value) { t = f(args...); } else { for (ssize_t i = 0; i < t.size(); i++) fill_seq(t[i], f, args..., i); } } // make multi dimension vector template vec make_v(ssize_t sz) { return vec(sz); } template auto make_v(ssize_t hs, Tail&&... ts) { auto v = std::move(make_v(std::forward(ts)...)); return vec(hs, v); } // init namespace init__ { struct InitIO { InitIO() { std::cin.tie(nullptr); std::ios_base::sync_with_stdio(false); std::cout << std::fixed << std::setprecision(30); } } init_io; } int main() { ll n, m; std::cin >> n >> m; auto av = make_v(n, m); vec sum(m); for (auto &&v : av) { for (auto &&e : v) std::cin >> e; for (ll i = 0; i < m; i++) sum[i] += v[i]; } vec score(n); for (ll i = 0; i < n; i++) { ll tmp = 0; for (ll j = 0; j < m; j++) tmp += sum[j] * av[i][j]; score[i] = pll(tmp, i); } std::sort(ALLR(score)); vec v1, v2; for (ll i = 0; i * 2 < n; i++) { ll i1 = 2 * i; ll i2 = i1 + 1; v1.push_back(score[i1].second); v2.push_back(score[i2].second); } vec sum1(m), sum2(m); for (ll e : v1) for (ll i = 0; i < m; i++) sum1[i] += av[e][i]; for (ll e : v2) for (ll i = 0; i < m; i++) sum2[i] += av[e][i]; ll ans = 0; for (ll e : sum1) ans += e * e; for (ll e : sum2) ans -= e * e; std::cout << ans << "\n"; return 0; }