Pawel and Shaka recently became friends. They believe their friendship will last forever if they merge their favorite strings.

The lengths of their favorite strings are the same, . Mingling two strings, and , both of length , will result in the creation of a new string of length . It will have the following structure:

You are given two strings (Pawel's favorite) and (Shaka's favorite), determine the mingled string .

Input Format

The first line of input contains the string .
The second line contains .

Output Format

Print the mingled string, .

Constraints

The string only consists of lowercase English characters ().
length(P) = length(Q)

Sample Input #00

abcde
pqrst

Sample Output #00

apbqcrdset

Sample Input #01

hacker
ranker

Sample Output #01

hraacnkkeerr

Explanation

Sample Case #00:

Sample Case #01:

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Tested by Wanbo