If $A\times B$ means $A$ is to the south of $B$; $A+B$ means $A$ is to the north of $B$; $A\%B$ means $A$ is to the east of $B$; $A-B$ means $A$ is to the west of $B$: then in $P\%Q+R-S$, $S$ is in which direction with respect to $Q$?

Let's decode the expression $P\%Q+R-S$ step by step:
1. $P\%Q⟹P$ is to the east of $Q$.
2. $Q+R⟹Q$ is to the north of $R$.
3. $R-S⟹R$ is to the west of $S$.

Let's plot this relative to $Q$:

* $Q$ is at some point.
* $R$ is to the south of $Q$ (since $Q$ is north of $R$).
* $S$ is to the east of $R$ (since $R$ is west of $S$).

Now, looking from $Q$:

* $R$ is directly South.
* $S$ is East of $R$.
Therefore, $S$ lies in the South-east direction with respect to $Q$.