Xiaoming compiled a calculation program. When any number is input, the result on the display is always equal to the sum of the square of the input number and 1. If 0 is input and the displayed result is input again, the displayed result should be How many
小明编制了一个计算程序，当输入任一个数时，显示屏的结果总等于所输入数的平方与1之和，若输入0，并将所显示的结果再次输入，这时显示的结果应当是多少
<gadget id="calculator">0 ** 2</gadget>
<output>0</output>

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

<gadget id="calculator">0 + 1 + 0 + 1</gadget>
<output>2</output>

<result>2</result>