Problem Statement

A positive integer $x$ is said to be a beautiful integer if and only if $x$ is a $9$-digit integer whose decimal notation $S_1\ldots S_9$ ($S_i$ is the $i$-th character) satisfies all of the following conditions:

• $S_1$ is not 0,
• $S_1 = S_2$,
• $S_5 = S_6$, and
• $S_7 = S_9$.

For instance, $998244353$ and $333333333$ are beautiful integers, while $111112222$ is not, since $S_5 \neq S_6$.

You are given a positive integer $N$. Print the $N$-th smallest beautiful integer.

Constraints

• $N$ is a positive integer.
• There are at least $N$ beautiful integers.

Input

The input is given from Standard Input in the following format:

N

Output

Print the $N$-th smallest beautiful integer.