Excel File I/O The attached Distances xisx file contains a spreadsheet with the pairwise distances in mies of the top 100 US cities by population. A preview of the spreadsheet is shown below. The first row and first column contain the city names using the following format: city name comma space capitalized state abbreviation, e.g. Nashville, TN. Note that the very first cell of the spresheet, A1, is blank. Write a function called get_distance that accepts two character vectot inputs representing the names of two cities. The function returns the distance between them as an autput argument called distance. For example, the call get_distance("Seattle, WA", Miami, FL') should return 3723. If one or both of the specified cities are not in the file, the function retums-1. Your function should load the data only once. File VO is a time consuming aperation. Loading the data muitiple times is will likely cause a time-out error when submitting your function. Preview of the first five cities of Distonces.xiax Abilene, TX Akron, OH Albuquerque, NM Alexandria, VA Allentown, PA 2 Abilene, TX 3 Akron, OH 4 Albupuerque, NM Alexandria, VA 6 Allentown, PA 1481 724 1615 1710 1481 2185 382 552 724 2185 2331 2447 1615 382 2331 195 1730 552 2447 195

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