Coordinates are a pair of numbers $(x, y)$ on a 2D plane.
However, Jacky thinks they are stupid and comes up with his own wacky system.

Input

The first line consists of an integer $N$. $(1\leq N\leq 100000)$
The next line consists of $N$ integers $a_i$. $(1 \leq a_i\leq 9)$

Output

Output the corresponding coordinate.