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 MOD = 1e9 + 7;
const int INF = 1e9 + 7;
const long long LINF = 2e18 + 7;
const int MXN = 2e2 + 5;
void io() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
}
int a[int(1e5) + 5];
long long cx[int(1e5) + 5];
long long cy[int(1e5) + 5];
int main() {
  io();
  int N;
  cin >> N;
  long long x = 0, y = 0;
  for (int i = 0; i < N; ++i) {
    cin >> cx[i] >> cy[i];
  }
  for (int i = N - 1; i >= 0; --i) {
    long long px = x + cx[i], py = y + cy[i];
    long long mx = x - cx[i], my = y - cy[i];
    if (sqrt(px * px + py * py + .0) <= sqrt(mx * mx + my * my + .0)) {
      x = px;
      y = py;
      a[i] = 1;
    } else {
      x = mx;
      y = my;
      a[i] = -1;
    }
  }
  for (int i = 0; i < N; ++i) cout << a[i] << ' ';
}