Bathroom sign in Poland (Cracow)

This was the sign indicating the toilets in Poland. Nice, a public toilet! But first, if you don’t know in advance, you see this sign and it means nothing at all right? And, even if you accidently pass in front of the restroom and realize it is one, which side should you choose? Well you wait and wait until someone comes in or out. I still cannot remember which one is which... I guess the feminine was the triangle. hahaha