Virtual contest is a way to take part in past contest, as close as possible to participation on time. It is supported only ICPC mode for virtual contests.
If you've seen these problems, a virtual contest is not for you - solve these problems in the archive.
If you just want to solve some problem from a contest, a virtual contest is not for you - solve this problem in the archive.
Never use someone else's code, read the tutorials or communicate with other person during a virtual contest.

No tag edit access

C. Leaving the Bar

time limit per test

2 secondsmemory limit per test

256 megabytesinput

standard inputoutput

standard outputFor a vector $$$\vec{v} = (x, y)$$$, define $$$|v| = \sqrt{x^2 + y^2}$$$.

Allen had a bit too much to drink at the bar, which is at the origin. There are $$$n$$$ vectors $$$\vec{v_1}, \vec{v_2}, \cdots, \vec{v_n}$$$. 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 $$$|p| \le 1.5 \cdot 10^6$$$ so that he can stay safe.

Input

The first line contains a single integer $$$n$$$ ($$$1 \le n \le 10^5$$$) — 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 $$$|v_i| \le 10^6$$$ for all $$$i$$$.

Output

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

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

Codeforces (c) Copyright 2010-2019 Mike Mirzayanov

The only programming contests Web 2.0 platform

Server time: Oct/15/2019 15:38:00 (h2).

Desktop version, switch to mobile version.

Supported by

User lists

Name |
---|