(-1)**100-(-1)**101+(-1)**101*|-1|=how much
(-1)**100-(-1)**101+(-1)**101*|-1|=多少
<gadget id="calculator">1 - (-1)</gadget>
<output>2</output>

<gadget id="calculator">(-1) * 1</gadget>
<output>-1</output>

<gadget id="calculator">2 + (-1)</gadget>
<output>1</output>

<result>1</result>