On the island of Gibraltar, IAF has installed an airbase. It is the only island on Kryptol planet filled otherwise with water.One fine day it was decided a plane must fly across the planet but a plane has a fuel capacity to fly only halfway through but they can refuel each other in mid air.
1.The min number of planes required to help complete on full round?(all planes clockwise)
2.The min number of filghts for above?