Extract Middle Substring

Background

Congcong is learning string manipulation and encountered an interesting problem that requires extracting a specific part from a given string.

Problem Description

Given a string of odd length, return the string length $3$ from its middle. For example, "Candy" yields "and". The string length will be at least $3$.

Input Format

Input is given from standard input in the following format.

A string $S$

Output Format

Output is printed to standard output in the following format.

The extracted middle substring of length $3$

Sample

Candy

"and"

and

"and"

solving

"lvi"

Sample Explanation

For the input "Candy\