
    Write a function that identifies and activates the first unexplored interest category in a user's social networking profile, where interests are represented as a binary preference map. The function should find the leftmost unset bit (0) in the user's preference bitmap and set it to 1, effectively suggesting a new interest category based on friend group activities.
    

    
def set_left_most_unset_bit(n):
    """
    Write a function that identifies and activates the first unexplored interest category in a user's social networking profile, where interests are represented as a binary preference map. The function should find the leftmost unset bit (0) in the user's preference bitmap and set it to 1, effectively suggesting a new interest category based on friend group activities.
    

    """
def set_left_most_unset_bit(n):
    """
    Write a function that identifies and activates the first unexplored interest category in a user's social networking profile, where interests are represented as a binary preference map. The function should find the leftmost unset bit (0) in the user's preference bitmap and set it to 1, effectively suggesting a new interest category based on friend group activities.
    

    """
    if not n & n + 1:
        return n
    (pos, temp, count) = (0, n, 0)
    while temp:
        if not temp & 1:
            pos = count
        count += 1
        temp >>= 1
    return n | 1 << pos