Problem Statement

Takahashi has two integers $X$ and $Y$.

He computed $X + Y$ and $X - Y$, and the results were $A$ and $B$, respectively.

Now he cannot remember what $X$ and $Y$ were. Find $X$ and $Y$ for him.

Constraints

• $-100 \leq A, B \leq 100$
• For the given integers $A$ and $B$, there uniquely exist integers $X$ and $Y$ such that $X + Y = A$ and $X - Y = B$.
• All values in input are integers.

Input

Input is given from Standard Input in the following format:

A B

Output

Print $X$ and $Y$.