Reverse Words Order and Swap Cases

Given a sentence, reverse the order of the words and swap the cases of each character. For example, if the input is "Hello World", the output should be "wORLD hELLO". This problem tests your ability to manipulate strings, including splitting, reversing, and case conversion.

Details:

• Words are defined as sequences of characters separated by whitespace.
• Swapping cases means every lowercase letter becomes uppercase and every uppercase letter becomes lowercase.
• If the input is empty, the output should also be an empty string.

Examples:

Input: Hello World
Output: wORLD hELLO
Input: Python is FUN
Output: fun IS pYTHON

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inputFormat

The input consists of a single line containing a sentence S, where S may include letters, numbers, and spaces.

Note: Input is provided via standard input (stdin).

outputFormat

Output a single line: the transformed sentence where the word order is reversed and each character's case is swapped.

Note: Output the result via standard output (stdout).

## sample

Hello World

wORLD hELLO