A B 들어가는 수가 자연수인가요?

antangle Reply 9 years 3 weeks ago

명시좀 해주세요.....................................................................................................

Status Problem

spongbob9876

Reply 9 years 3 weeks ago

명시되어있는데요?

withcs1

Reply 9 years 3 weeks ago

수정하였습니다~