Problem: For a vector \vec{v} = (x, y), define |v| = √{x^2 + y^2}.

Allen had a bit too much to drink at the bar, which is at the origin. There are n vectors \vec{v_1}, \vec{v_2}, ⋅⋅⋅, \vec{v_n}. Allen will make n moves. As Allen's sense of direction is impaired, during the i-th move he will either move in the direction \vec{v_i} or -\vec{v_i}. In other words, if his position is currently p = (x, y), he will either move to p + \vec{v_i} or p - \vec{v_i}.

Allen doesn't want to wander too far from home (which happens to also be the bar). You need to help him figure out a sequence of moves (a sequence of signs for the vectors) such that his final position p satisfies |p| ≤ 1.5 ⋅ 10^6 so that he can stay safe.

Input

The first line contains a single integer n (1 ≤ n ≤ 10^5) — the number of moves.

Each of the following lines contains two space-separated integers x_i and y_i, meaning that \vec{v_i} = (x_i, y_i). We have that |v_i| ≤ 10^6 for all i.

Output

Output a single line containing n integers c_1, c_2, ⋅⋅⋅, c_n, each of which is either 1 or -1. Your solution is correct if the value of p = ∑_{i = 1}^n c_i \vec{v_i}, satisfies |p| ≤ 1.5 ⋅ 10^6.

It can be shown that a solution always exists under the given constraints.

Examples

Input

3
999999 0
0 999999
999999 0


Output

1 1 -1 


Input

1
-824590 246031


Output

1 


Input

8
-67761 603277
640586 -396671
46147 -122580
569609 -2112
400 914208
131792 309779
-850150 -486293
5272 721899


Output

1 1 1 1 1 1 1 -1 

Solution (in CPP):

Solution:
#include <bits/stdc++.h>
using namespace std;
const int N = 1e5;
const double MAX_DIST = 15e5;
int x[N], y[N], ans[N];
long long dist(long long x, long long y) { return x * x + y * y; }
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  int n;
  cin >> n;
  vector<pair<long long, int>> vv(n);
  for (int i = 0; i < n; i++) {
    cin >> x[i] >> y[i];
    vv[i] = make_pair(dist(x[i], y[i]), i);
  }
  sort(vv.begin(), vv.end());
  long long xx = 0, yy = 0;
  for (int i = 0; i < vv.size(); i++) {
    int idx = vv[i].second;
    if (dist(xx + x[idx], yy + y[idx]) > dist(xx - x[idx], yy - y[idx])) {
      ans[idx] = -1;
    } else {
      ans[idx] = 1;
    }
    xx += ans[idx] * x[idx];
    yy += ans[idx] * y[idx];
  }
  if (sqrt(dist(xx, yy)) > MAX_DIST) {
    xx = 0, yy = 0;
    for (int i = vv.size() - 1; i >= 0; i--) {
      int idx = vv[i].second;
      if (dist(xx + x[idx], yy + y[idx]) > dist(xx - x[idx], yy - y[idx])) {
        ans[idx] = -1;
      } else {
        ans[idx] = 1;
      }
      xx += ans[idx] * x[idx];
      yy += ans[idx] * y[idx];
    }
  }
  for (int i = 0; i < n; i++) {
    cout << ans[i] << " ";
  }
  cout << endl;
  return 0;
}