Given a set $\textstyle S$, dXqwq and Haitang take turns performing the following operations, with dXqwq going first:
- Find a pair $\textstyle (x,y)$ such that $\textstyle x,y\in S$ and $\textstyle \gcd(x,y)\notin S$.
- Insert $\textstyle \gcd(x,y)$ into $\textstyle S$.
The player who cannot make a move loses the game. You need to output the winner when both players play optimally.