Let us call a number a lucky number if all the digits in the number are odd.

Given a number \(N\) , Alice wonders what is the nearest lucky number to \(N\).

Find a number \(X\) such that \(abs(N-X)\) is minimum and \(X\) is a lucky number.

Input Format:

First line contains an integer \(N\)

Output Format:

Print an integer \(X\) such that \(abs(N-X)\) is minimum
Incase of multiple answers, print the smallest answer

Constraints:
\(1 \leq N \leq 10^{18}\)