New Password (Interleave Two Strings)

Take the first character of a, the first character of b, the second character of a, the second character of b, and so on; once one string is used up, append the rest of the other string.

输入格式

Two lines containing a and b respectively. On this site each string has 0 to 100000 printable ASCII characters (spaces allowed, but no newlines).

输出格式

Output the merged string as one whole line, preserving spaces.

样例 1

输入：

hackerrank
mountain

输出：

hmaocuknetrariannk

样例 2

输入：

abc

输出：

abc

样例 3

输入：

ab
XYZ

输出：

aXbYZ

样例说明

The correct outputs are hmaocuknetrariannk; abc; and aXbYZ. A spelling error in the original site's first example has been corrected.