Find the temperature closest to 0 In this exercise, you have to analyze records of temperature to find the closest to zero.

Write a program that prints the temperature closest to 0 among input data.

Input


N, the number of temperatures to analyse (optional). This will be nonzero.
The N temperatures expressed as integers ranging from -273 to 5526.


Output

Output the temperature closest to 0. If two temperatures are equally close, take the positive one. For instance, if the temperatures are -5 and 5, output 5.

Example

Input

    5
    1 -2 -8 4 5

Output

    1


This challenge is similar to this one on CodinGame, you can view the problem statement source here.
Some modifications have been made to the text.
JavaScript (ES6), 33 bytes

a=&gt;a.reduce((m,n)=&gt;n*n-n&lt;m*m?n:m)


Demo



let f =

a=&gt;a.reduce((m,n)=&gt;n*n-n&lt;m*m?n:m)

console.log(f([1, -2, -8, 4, 5]))