\begin{logicproof}{1}
	p \imp \lnot q & \prem \\
	q & \prem\\
	\begin{subproof}
		p & \assum \\
		\lnot q & $\impe 3,1$\\
		\bot & $\nege 2,4$
	\end{subproof}
	\lnot p & $\negi 3-5$
\end{logicproof}