Score : $100$ points

Problem Statement

When you asked some guy in your class his name, he called himself $S$, where $S$ is a string of length between $3$ and $20$ (inclusive) consisting of lowercase English letters. You have decided to choose some three consecutive characters from $S$ and make it his nickname. Print a string that is a valid nickname for him.

Constraints

• $3 \leq |S| \leq 20$
• $S$ consists of lowercase English letters.

Input

Input is given from Standard Input in the following format:

$S$

Output

Print your answer.

takahashi

tak

naohiro

nao