#include <bits/stdc++.h>
using namespace std;
int main(){
  int N;
  cin >> N;
  vector<int> Xa(N), Ya(N), Xb(N), Yb(N);
  for (int i = 0; i < N; i++){
    cin >> Xa[i] >> Ya[i] >> Xb[i] >> Yb[i];
    Ya[i] += 20000;
    Yb[i] += 20000;
  }
  vector<int> left(40000, 0), right(40000, 0);
  for (int i = 0; i < N; i++){
    long long ans = 0;
    for (int j = Ya[i]; j < Yb[i]; j++){
      if (left[j] > Xa[i]){
        ans += left[j] - Xa[i];
        left[j] = Xa[i];
      }
      if (right[j] < Xb[i]){
        ans += Xb[i] - right[j];
        right[j] = Xb[i];
      }
    }
    cout << ans << endl;
  }
}