sgn function#8608

sgn function

1 second

128 megabytes

Very easy

Find the value of the sgn function:

s g n (x) = ⎩ ⎨ ⎧ 1, x > 0 0, x = 0 - 1, x < 0

sgn(x) = \begin{cases} 1, x > 0 \\ 0, x = 0 \\ -1, x < 0 \end{cases}

Input

One integer $x (- 1 0^{9} \leq x \leq 1 0^{9})$ x~(-10^9 \le x \le 10^9).

Print the value of the sgn function for the given value of $x$ .

Example 1

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Example 2

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Example 3

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s g n (x) = ⎩ ⎨ ⎧ 1, x > 0 0, x = 0 - 1, x < 0

x (- 1 0^{9} \leq x \leq 1 0^{9})