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

#define ll long double
#define all(x) x.begin(), x.end()
#define pb push_back
#define f first
#define s second

int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0);
    if (fopen("input.in", "r")) {
        freopen("input.in", "r", stdin);
        freopen("output.out", "w", stdout);
    }
    int n; cin>>n;
    ll x[n], y[n], vx[n], vy[n];
    for(int i=0; i<n; i++) cin>>x[i]>>y[i]>>vx[i]>>vy[i];

    ll ar = 5e18;
    vector<ll> deltas = {1e-7, 1e-8, 1e-9, 1e-10, 1e-11, 1e-12};
    for(auto delta:deltas){
        ll l = 0;
        ll r = 2e11;
        while(r - l >= delta) {
            ll m = (l+r)/2.0;
            ll mnx = x[0] + vx[0] * m;
            ll mxx = x[0] + vx[0] * m;
            ll mny = y[0] + vy[0] * m;
            ll mxy = y[0] + vy[0] * m;
            for(int i=1; i<n; i++){
                mnx = min(mnx, x[i] + vx[i] * m);
                mxx = max(mxx, x[i] + vx[i] * m);
                mny = min(mny, y[i] + vy[i] * m);
                mxy = max(mxy, y[i] + vy[i] * m);
            }

            ll md = m + delta;

            ll mnxd = x[0] + vx[0] * md;
            ll mxxd = x[0] + vx[0] * md;
            ll mnyd = y[0] + vy[0] * md;
            ll mxyd = y[0] + vy[0] * md;
            for(int i=1; i<n; i++){
                mnxd = min(mnxd, x[i] + vx[i] * md);
                mxxd = max(mxxd, x[i] + vx[i] * md);
                mnyd = min(mnyd, y[i] + vy[i] * md);
                mxyd = max(mxyd, y[i] + vy[i] * md);
            }

            if((mxx - mnx) * (mxy - mny) > (mxxd - mnxd) * (mxyd - mnyd) + delta){
                l = m;
            }
            else {
                r = m;
            }
            // cout<<l<<"|"<<r<<"\n";
            // cout<<(mxx - mnx) * (mxy - mny)<<"\n";
            ar = min(ar, (mxx - mnx) * (mxy - mny));
            ar = min(ar, (mxxd - mnxd) * (mxyd - mnyd));
        }
        for(int i=-10; i<=10; i++){
            ll m = i * delta/10 + l;
            if(m<0) continue;
            ll mnx = x[0] + vx[0] * m;
            ll mxx = x[0] + vx[0] * m;
            ll mny = y[0] + vy[0] * m;
            ll mxy = y[0] + vy[0] * m;
            for(int i=1; i<n; i++){
                mnx = min(mnx, x[i] + vx[i] * m);
                mxx = max(mxx, x[i] + vx[i] * m);
                mny = min(mny, y[i] + vy[i] * m);
                mxy = max(mxy, y[i] + vy[i] * m);
            }
            ar = min(ar, (mxx - mnx) * (mxy - mny));
        }
    }
    cout<<fixed<<setprecision(25)<<ar;
}