Santa and three of his elves, Razzle, Dazzle, and Jazzle, have been separated from the sleigh by an ice chasm! All four must cross a narrow bridge to the sleigh, and they only have 17 minutes to spare, or there will not be enough time for Santa to deliver all the presents.
You must help them cross to the other side. It is night. They have one flashlight. Only two of them can cross at a time. Any group who crosses, whether 1 or 2 of them, must have the flashlight with them. The flashlight must be walked back and forth, it cannot be thrown, etc. Each of them walks at a different speed. A pair must walk together at the rate of the slower pace:
> Razzle: 1 minute to cross
> Dazzle: 2 minutes to cross
> Jazzle: 5 minutes to cross
> Santa: 10 minutes to cross
For example: if Dazzle and Santa walk across first, 10 minutes have elapsed when they get to the other side of the bridge. If Santa then returns with the flashlight, a total of 20 minutes have passed, and you have failed the mission.
The discount code is a string of letters made of the first letter of the slowest walker’s name in each leg of the trip.