摘要：
DescriptionAt the end of the 200013thyear of the Galaxy era, the war between Carbon-based lives and Silicon civilization finally comes to its end with the Civil Union born from the ruins. The shadow fades away, and the new-born Union is opening a new page.Although the war ended, the affect of the wa 阅读全文
摘要：
Problem DescriptionMex is a function on a set of integers, which is universally used for impartial game theorem. For a non-negative integer set S, mex... 阅读全文