Based on the provided information, no identifiable LGBTQ+ characters or themes are present in the film "Valentin i Valentina." Therefore, the film's net impact on LGBTQ+ portrayal is not applicable.

The film "Valentin and Valentina" (1985) is a romantic drama centered on the relationship between two young lovers and the societal and familial obstacles they face. There are no identifiable transsexual characters or themes present in the narrative, leading to a determination of N/A for its portrayal.

The movie does not contain any action or adventure elements.

The film "Valentin i Valentina" is an adaptation of a play by Mikhail Roshchin. The characters' genders in the film align with their established genders in the source material, with no instances of a character canonically male or female being portrayed as a different gender.

This film is a Soviet adaptation of a Russian play, featuring characters who are implicitly Russian/Slavic. The actors cast for these roles are consistent with the established racial background of the characters, with no indication of any character being portrayed by an actor of a different race than originally conceived or depicted.