You need a username and a password to login. A username consists only of lowercase letters and is composed of the first letter of your first name and the letters of your last name.

Input

The first name and the last name of a person, each on a separate line.

Output

The username of the person.

Example

Input:

Sansa
Stark

Output:

sstark

Example

Input:

Jon
Snow

Output:

jsnow