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.

Input

Input is given from Standard Input in the following format:
S

Output

Print your answer.

Constraints

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

Sample Input 1

takahashi

Sample Output 1

tak

Sample Input 2

naohiro

Sample Output 2

nao

见题面 Input 部分

见题面 Output 部分