In 1, 2, 3, ... 2008, how many numbers can be selected at most, so that the sum of any two numbers in the selected numbers cannot be divisible by 3?
在1，2，3，…2008中最多可选出多少个数，使选出的数中任意两个数的和都不能被3整除？
<gadget id="calculator">670 + 1</gadget>
<output>671</output>

<result>671</result>