Question Number 193656 by York12 last updated on 17/Jun/23
$${please}\:{can}\:{someone}\:{solves}\:{this}\: \\ $$
Commented by mahdipoor last updated on 17/Jun/23
$${if}\:\:\:\mathrm{2}\nmid{n}\:\Rightarrow\mathrm{2}\nmid{R}\:\:\:\:\mathrm{2}\mid{L} \\ $$$${if}\:\:\:\mathrm{2}\mid{n}\:\Rightarrow\mathrm{2}\mid{R}\:\:\:\:\mathrm{2}\nmid{L} \\ $$$$\Rightarrow\nexists{n} \\ $$