Among the 100 numbers from 1 to 100, at least how many numbers must be taken out to ensure that the difference between at least two numbers in the period is less than 10.
在1-100这100个数中，至少要取出多少个数，才能保证期中至少有两个数的差小于10．
<gadget id="calculator">100 / 10</gadget>
<output>10</output>

<gadget id="calculator">10 + 1 + 1</gadget>
<output>12</output>

<result>12</result>