Surname and Given Name

Version: Phuoc Hung OJ Extended

Problem Statement

A person's surname $a$ and given name $b$ are supplied on separate lines. Combine them in the following order: surname, comma, one space, given name.

Do not put a space before the comma. Preserve all Vietnamese characters.

Input

The first line contains surname $a$; the second contains given name $b$. Both fields are nonempty.

Output

Print one line in the exact format surname, given name, inserting exactly one space after the comma.

Subtasks

• Subtask 1 (100 points): $1\le |a|,|b|\le 50$ characters.

Examples

Example 1

Input

Nguyen
An

Output

Nguyen, An

Explanation. Join surname Nguyen, comma-space, and given name An to get Nguyen, An.

Example 2

Input

Lê
Bình

Output

Lê, Bình

Explanation. Preserve Vietnamese characters in Lê and Bình, inserting only comma-space.

Example 3

Input

A
B

Output

A, B

Explanation. The single-character fields A and B produce A, B.