#include <bits/stdc++.h>
using namespace std;

#define fs first
#define sc second
#define pb emplace_back
#define mp make_pair
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()

const int32_t inf = 1001001001;
const int64_t infll = 1001001001001001001ll;
const int dx[] = {0, -1, 1, 0, -1, 1, -1, 1}, dy[] = {-1, 0, 0, 1, -1, -1, 1, 1};
const string YES = "YES", NO = "NO", Yes = "Yes", No = "No", yes = "yes", no = "no";

// clang-format off
// ostream &operator<<(ostream &os, __int128_t value) { if (ostream::sentry(os)) { __uint128_t tmp = value < 0 ? -value : value; char buffer[64]; char *d = end(buffer); do { --d; *d = "0123456789"[tmp % 10]; tmp /= 10; } while (tmp != 0); if (value < 0) { --d; *d = '-'; } int len = end(buffer) - d; if (os.rdbuf()->sputn(d, len) != len) { os.setstate(ios_base::badbit); }} return os; }
// istream &operator>>(istream &is, __int128_t &value) { string in; is >> in; value = 0; for (const char &c : in) { if ('0' <= c && c <= '9') value = 10 * value + (c - '0'); } if (in[0] == '-') value *= -1; return is; }
// ostream &operator<<(ostream &os, __uint128_t value) { if (ostream::sentry(os)) { char buffer[64]; char *d = end(buffer); do { --d; *d = "0123456789"[value % 10]; value /= 10; } while (value != 0); int len = end(buffer) - d; if (os.rdbuf()->sputn(d, len) != len) { os.setstate(ios_base::badbit); }} return os; }
// istream &operator>>(istream &is, __uint128_t &value) { string in; is >> in; value = 0; for (const char &c : in) { if ('0' <= c && c <= '9') value = 10 * value + (c - '0'); } return is; }
template <typename T> ostream &operator<<(ostream &os, vector<T> &v) { os << v[0]; for (int i = 1; i < v.size(); ++i) os << " " << v[i]; return os; }
template <typename T> istream &operator>>(istream &is, vector<T> &v) { for (T &in : v) is >> in; return is; }
template <typename T1, typename T2> ostream &operator<<(ostream &os, pair<T1, T2> p) { os << p.fs << " " << p.sc; return os; }
template <typename T1, typename T2> istream &operator>>(istream &is, pair<T1, T2> &p) { is >> p.fs >> p.sc; return is; }

struct IoSetup { IoSetup(){ cin.tie(0); ios::sync_with_stdio(0); cout << fixed << setprecision(10); cerr << fixed << setprecision(10); } } iosetup;

inline int64_t in() { int64_t x = 0; cin >> x; return x; }

template <typename T> void sort(vector<T> &v) { sort(all(v)); }
template <typename T> vector<T> make_v(size_t a, T b) { return vector<T>(a, b); }
template <typename... Ts> auto make_v(size_t a, Ts... ts) { return vector<decltype(make_v(ts...))>(a, make_v(ts...)); }
template <typename T1, typename T2> inline bool chmax(T1 &a, T2 b) { return a < b && (a = b, true); }
template <typename T1, typename T2> inline bool chmin(T1 &a, T2 b) { return a > b && (a = b, true); }
// clang-format on

signed main(int argc, char *argv[]) {
  int n = in();
  vector<int64_t> x(n), y(n);
  for (int i = 0; i < n; ++i) {
    cin >> x[i] >> y[i];
    if (x[i] > y[i]) swap(x[i], y[i]);
  }

  int64_t MIN = *min_element(all(x));
  int64_t MAX = *max_element(all(y));

  int64_t ans = infll;
  {
    int64_t Rmin = MIN, Rmax = -infll;
    int64_t Bmin = infll, Bmax = MAX;

    for (int i = 0; i < n; ++i) {
      if (Rmin == x[i]) {
        chmin(Bmin, y[i]);
        continue;
      }
      if (Bmax == y[i]) {
        chmax(Rmax, x[i]);
        continue;
      }

      chmin(Bmin, y[i]);
      chmax(Rmax, x[i]);
    }

    // cerr << "ans1 : " << (Rmax - Rmin) * (Bmax - Bmin) << endl;
    chmin(ans, (Rmax - Rmin) * (Bmax - Bmin));
  }

  {
    int64_t Rmin = MIN, Rmax = MAX;
    int64_t Bmin = MIN, Bmax = MAX;

    vector<pair<int64_t, int64_t>> v;
    for (int i = 0; i < n; ++i) {
      v.pb(x[i], y[i]);
    }

    sort(v);

    int64_t Max = v.back().fs, Min = v.back().fs;
    for (int i = 1; i < n; ++i) {
      chmax(Max, v[i - 1].sc);
      chmin(Min, v[i - 1].sc);
      if ((Bmax - Bmin) > (Max - min(Min, v[i].fs))) {
        Bmax = Max;
        Bmin = min(Min, v[i].fs);
      }
    }

    // cerr << "ans2 : " << (Rmax - Rmin) * (Bmax - Bmin) << endl;
    chmin(ans, (Rmax - Rmin) * (Bmax - Bmin));
  }

  cout << ans << endl;
}


Measured memory_bytes: 9584