Among the first 2011 positive integers, how many are neither square nor cubic.
在前2011个正整数中，既不是平方数也不是立方数有多少个．
<gadget id="calculator">12 - 3</gadget>
<output>9</output>

<gadget id="calculator">44 + 9</gadget>
<output>53</output>

<gadget id="calculator">2_011 - 53</gadget>
<output>1_958</output>

<result>1_958</result>