In the bustling city of New York, there is an office of registration

department that handle vehicle registration. Each vehicle that gets

registered here, will receive a unique registration id$.$ Each registration

id consists of alphanumeric characters.

The department wants to reformat the registration id such that all

alphabets are capitalized and all the alphanumeric characters are

divided into groups of characters each and these groups

should be separated using hyphen $().$ The first group can contain

less than or equal to characters.

Given a and a number $,$ write a program to

print the new registration id after reformatting the