$$(-1) \times (-1) \times (-1) \times (-1) \times (-1) \times (-1) \times (-1) \times (-1)$$
$1$
$$-\left(-1\right)\left(-1\right)\left(-1\right)\left(-1\right)\left(-1\right)$$
$$-\left(-1\right)\left(-1\right)\left(-1\right)$$
$$-\left(-1\right)$$
$$1$$
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