P.S.: We will use cin/cout to read/write a string.
You are given two strings, and , separated by a new line. Each string will consist of lower case Latin characters ('a'-'z').
In the first line print two space-separated integers, representing the length of and respectively.
In the second line print the string produced by concatenating and ().
In the third line print two strings separated by a space, and . and are the same as and , respectively, except that their first characters are swapped.