#include <bits/stdc++.h>

using namespace std;

using ll = long long;

constexpr char newl = '\n';

ll solve(ll x, ll y, map<ll, ll>& d, ll& sum) {
    auto itr = d.upper_bound(x);

    ll ng = 0, ok = 1e9;
    while (ok - ng > 1) {
        ll mid = (ok + ng) / 2;
        (d.lower_bound(mid)->second <= y ? ok : ng) = mid; 
    }

    ll diff = 0;
    if (ok <= x) {
        for (auto it = d.lower_bound(ok); it != itr; ++it) {
            diff -= it->second * (it->first - prev(it)->first);
        }

        auto itl = d.lower_bound(ok);
        d.erase(itl, itr);
    }

    {
        d[x] = y;
        auto it = d.find(x);
        if (prev(it)->second > y && y > next(it)->second) {
            diff += (y - next(it)->second) * (x - prev(it)->first);
        } else {
            d.erase(x);
        }
    }

    assert(diff >= 0);

    sum += diff;
    return diff;
}

int main() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);

    int n;
    cin >> n;

    map<ll, ll> d1, d2, d3, d4;
    d1[0] = 1e9;
    d1[1e9] = 0;
    d2[0] = 1e9;
    d2[1e9] = 0;
    d3[0] = 1e9;
    d3[1e9] = 0;
    d4[0] = 1e9;
    d4[1e9] = 0;

    ll sum1 = 0, sum2 = 0, sum3 = 0, sum4 = 0;
    for (int i = 0; i < n; i++) {
        ll xa, ya, xb, yb;
        cin >> xa >> ya >> xb >> yb;

        xa = abs(xa);
        ya = abs(ya);

        ll ans = 0;
        ans += solve(xa, ya, d1, sum1);
        ans += solve(xb, ya, d2, sum2);
        ans += solve(xa, yb, d3, sum3);
        ans += solve(xb, yb, d4, sum4);
        cout << ans << newl;
    }

    return 0;
}