Gulvlegging/snekker

I need some help finishing my floor project - it is just a bit of the hallway left. The problem is there is a rounded corner, and i don´t have a saw that can cut a nice curve. The other problem is that the parkett is a little thicker than the laminat that used to be there, so the door frames and doors are slightly too long now. See pics attached. i have all necessary materials/equipment, except a saw that can cut curves, and a sander if that is necessary (i have saws that can cut straight). i could also use some advice about how to deal with the old nails in the moldings (lister/kvartstaff) when putting on the new ones. i prefer email, not phone calls. i can read Norwegian, so feel free to respond in your language