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;
struct Point {
  int x, y, num;
  double ang;
} p[101010];
long long sqr(long long x) { return x * x; }
bool cmp(const Point &A, const Point &B) { return A.ang < B.ang; }
int ans[101010];
int main() {
  srand(85935396);
  int n;
  scanf("%d", &n);
  for (int i = 1; i <= n; i++) {
    scanf("%d%d", &p[i].x, &p[i].y);
    p[i].num = i;
    if (p[i].x == 0 && p[i].y == 0)
      p[i].ang = 0;
    else {
      p[i].ang = atan2(p[i].y, p[i].x);
      if (p[i].ang < 0) p[i].ang += 3.1415926535;
    }
  }
  sort(p + 1, p + n + 1, cmp);
  long long x = 0, y = 0;
  for (int i = n; i >= 1; i--) {
    if (sqr(x + p[i].x) + sqr(y + p[i].y) < sqr(x - p[i].x) + sqr(y - p[i].y)) {
      ans[p[i].num] = 1;
      x += p[i].x;
      y += p[i].y;
    } else {
      ans[p[i].num] = -1;
      x -= p[i].x;
      y -= p[i].y;
    }
  }
  for (int i = 1; i <= n; i++) printf("%d ", ans[i]);
  printf("\n");
  return 0;
}