from typing import Optional


def track_in_playlist_trend_metric(
    trend_metric: Optional[int], is_top_track_for_isrc: bool = False, is_personalised: bool = False
) -> Optional[int]:
    if is_top_track_for_isrc and not is_personalised:
        return trend_metric


def track_in_playlist_is_entry(
    num_days_on: Optional[int], is_top_track_for_isrc: bool = False, is_personalised: bool = False
) -> bool:
    return is_top_track_for_isrc and not is_personalised and num_days_on == 0