The cost of sending a package by an express delivery service is S12.00 for the first two pounds, and $4.50 for each pound or fraction thereof over two pounds. If the package weighs more than 70 pounds, a S15.00 excess weight surcharge is added to the cost. No package over 100 pounds will be accepted. Write a program that accepts the weight of a package in pounds and computes the cost of mailing the package. Be sure to handle the case of overweight packages.