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Problem M
Lubbi Lærir

Languages en is
/problems/lubbilaerir/file/statement/en/img-0001.jpg
Image taken from flickr.com

Ásdís works in a kindergarten. She is teaching the kids the letters of the alphabet today. She uses the game Lubbi Learns to teach the kids about the letters.

The game works in the following manner. First, she shows the kids an object. Then the kids guess the first letter of the word which describes the object. Can you help the kids win the game?

Input

The only line of input contains a single word which describes the object Ásdís shows to the kids. You may assume that only English lowercase letters appear in the input and that the word is at most $20$ letters.

Output

Output the correct answer to win the game.

Scoring

Group

Points

Constraints

1

100

No further constraints.

Sample Input 1 Sample Output 1
akrein
a
Sample Input 2 Sample Output 2
bolli
b