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

using ll = long long;

int main() {
    int N; cin >> N;
    vector<ll> X(N), Y(N);
    for (int i=0; i<N; i++) cin >> X[i] >> Y[i];
    ll ans = 1e18;
    for (int i=0; i<N; i++) {
        for (int j=0; j<N; j++) {
            ll p = X[i], q = Y[j];
            ll sum = 0;
            for (int k=0; k<N; k++) sum += abs(X[i] - p) * abs(Y[i] - q);
            ans = min(ans, sum);
        }
    }
    cout << ans << endl;
}