Two in one

Rahul has two boxes $A$ and $B$.Box $A$ contain $N$ different colour balls and box $B$ contain $M$ different colour balls. Rahul find it very hard to manage two boxes, So he decided to put all the balls in one box. If a ball contain in both the boxes $A$ and $B$ so he will put only once in the box. (Colour of the ball is represented by an integer). ### Input - First line will contain $T$, number