String Insertion

Background

Congcong is learning string manipulation. He wants to try embedding a word into the middle of another string.

Problem Description

Given an "out" string of length 4, such as "<<>>", and a word, return a new string where the word is in the middle of the out string, e.g., "<<word>>". Note: use str.substring(i, j) to extract the String starting at index $i$ and going up to but not including index $j$.

Input Format

Input is given from Standard Input in the following format.

out_str word

The first line contains two strings, out_str (the 4-character "out" string) and word (the word to insert), separated by a space.

Output Format

Output is to Standard Output in the following format.

The new string with word inserted into the middle of out_str.

Sample

<<>>" "Yay

"<<Yay>>"

<<>>" "WooHoo

"<<WooHoo>>"

[[]]" "word

"[[word]]"

Sample Explanation

For the first sample, the out string is "<<>>" and the word is "Yay". Inserting "Yay" into the middle of "<<>>" results in "<<Yay>>".

Constraints

Time limit: 1 second, Memory limit: 1024KB.