9877: ABC306 —— A - Echo
[Creator : ]
Description
You are given a string $S$ of length $N$ consisting of lowercase English letters.
We denote the $i$-th character of $S$ by $S_i$.
Print the string of length $2N$ obtained by concatenating $S_1,S_1,S_2,S_2,\dots,S_N$, and $S_N$ in this order.
For example, if $S$ is `beginner`, print `bbeeggiinnnneerr`.
We denote the $i$-th character of $S$ by $S_i$.
Print the string of length $2N$ obtained by concatenating $S_1,S_1,S_2,S_2,\dots,S_N$, and $S_N$ in this order.
For example, if $S$ is `beginner`, print `bbeeggiinnnneerr`.
Input
The input is given from Standard Input in the following format:
```
$N$
$S$
```
```
$N$
$S$
```
Output
Print the answer.
Constraints
- $N$ is an integer such that $1 \le N \le 50$.
- $S$ is a string of length $N$ consisting of lowercase English letters.
- $S$ is a string of length $N$ consisting of lowercase English letters.
Sample 1 Input
8
beginner
Sample 1 Output
bbeeggiinnnneerr
It is the same as the example described in the problem statement.
Sample 2 Input
3
aaa
Sample 2 Output
aaaaaa