Generally speaking, can the photographic works in the competition be adjusted by photoshop?

This photo contest is divided into art, documentary, news, creativity, scenery and so on. In art and creativity, you can give full play to your later strength at will, and news cannot be changed (except size and editing). Documentaries and scenery can be properly adjusted in color, exposure, size and editing (you can't increase or decrease the remaining picture content, and you can't excessively adjust the photo distortion). In addition, different photography competitions have different requirements. You can know the rules of the competition in advance to contribute. In addition, some competitions only accept photos without electronic documents.