Jon Snow vs White Walkers

White walkers and their army of the dead are fast approaching the great wall at Dragonstone. Jon Snow and his army of crows are all that stand between the white walkers and Westeros. There are n crows in Jon Snow’s army and m white walkers in White walkers army. The strength of ith person in Jon Snow’s army is given Ai. The strength of each person in the white walker army is given by Bi. The tota