Score : 100 points
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 is given from Standard Input in the following format:
S
Print your answer.
takahashi
tak
naohiro
nao