Since the end of World War I , when Czechoslovakia became a separate country from Hungary , the town has been split into two : KomÃ rno is on the left ( north ) bank of the river , now in Slovakia , and KomÃ rom is on the right ( south ) bank of the river , in Hungary . KomÃ rno has a population of 37.000 and KomÃ rom has a population of 19.600 . In 1938 , under the First Vienna Award of that year , KomÃ rno ( now again as KomÃ rom ) was returned to Hungary .