Problem10810--ABC148 - B - Strings with the Same Length

10810: ABC148 - B - Strings with the Same Length

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Time Limit : 1.000 sec  Memory Limit : 512 MiB

Description

Given are strings $s$ and $t$ of length $N$ each, both consisting of lowercase English letters.

Let us form a new string by alternating the characters of $S$ and the characters of $T$, as follows: the first character of $S$, the first character of $T$, the second character of $S$, the second character of $T$, $...$, the $N$-th character of $S$, the $N$-th character of $T$. Print this new string.

Input

Input is given from Standard Input in the following format:

```
$N$
$S$ $T$
```

Output

Print the string formed.

Constraints

-   $1 \leq N \leq 100$
-   $|S| = |T| = N$
-   $S$ and $T$ are strings consisting of lowercase English letters.

Sample 1 Input

2
ip cc

Sample 1 Output

icpc

Sample 2 Input

8
hmhmnknk uuuuuuuu

Sample 2 Output

humuhumunukunuku

Sample 3 Input

5
aaaaa aaaaa

Sample 3 Output

aaaaaaaaaa

Source/Category