Problem Statement

Given are two strings S and T consisting of lowercase English letters. Concatenate T and S in this order, without space in between, and print the resulting string.

Input

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

Output

Print the resulting string.

Constraints

• S and T are strings consisting of lowercase English letters.
• The lengths of S and T are between 1 and 100 (inclusive).

Sample Input 1

oder atc

Sample Output 1

atcoder

When S = oder and T = atc, concatenating T and S in this order results in atcoder.

Sample Input 2

humu humu

Sample Output 2

humuhumu

见题面 Input 部分

见题面 Output 部分