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>
#pragma GCC optimize("Ofast")
using namespace std;
long long n, x[100010], y[100010], a[100010], nx, ny, G, tmp;
long long dis(long long x, long long y) { return x * x + y * y; }
int main() {
  srand(time(NULL));
  cin >> n, G = 1500000LL * 1500000;
  for (int i = 0; i < n; i++) {
    cin >> x[i] >> y[i];
    if (dis(nx + x[i], ny + y[i]) < dis(nx - x[i], ny - y[i]))
      nx += x[i], ny += y[i], a[i] = 1;
    else
      nx -= x[i], ny -= y[i], a[i] = -1;
  }
  while (dis(nx, ny) > G) {
    tmp = rand() % n;
    if (dis(nx - x[tmp] * a[tmp] * 2, ny - y[tmp] * a[tmp] * 2) < dis(nx, ny))
      nx -= x[tmp] * a[tmp] * 2, ny -= y[tmp] * a[tmp] * 2, a[tmp] = -a[tmp];
  }
  for (int i = 0; i < n; i++) cout << a[i] << ' ';
  cout << '\n';
}