When mailing a letter, the amount of postage is in question. You like to use this rule of thumb: use one stamp for every five sheets of paper or fraction thereof. For example, if you have $11$ sheets of paper, then you must use three stamps. Since you are frugal, if an envelope requires more than five stamps, then you simply don't mail the envelope. In your flowchart, you must read in appropriate data and print how many stamps to use.