(The cipher disk above shifts 'A' to 'N', 'B' to 'O', ... 'Z' to 'M', or a shift of 13. From secretcodebreaker.com.)

Write a program that prompts the user to enter a word and then prints out the word with each letter shifted right by 13. That is, 'A' becomes 'N', 'B' becomes 'O', ... 'Y' becomes 'L', and 'Z' becomes 'M'.

Assume that all inputted words are in upper case letters: 'A',...,'Z'.

A sample run of your program should look like:

Enter an all-big-letter string: ZEBRA Enter a non-negative int to shift: 13 ciphered string: MROEN