a. (15 points) Describe an algorithm (in pseudo-code) that finds the sum of the integers that are greater than-50 and less than 50 in a list (the list may contain integers in the desired interval and others that are not in the interval). Your input is a list of integers a1a2...an. If your list does not contain any integers in the specified interval then you should return an error message. If the input list is 4,12, 80, your must return 4+12 and if the list is --65, 60, 82, you must return 'not found'. b. (5 points) How may operations (arithmetic or logical comparison) are performed in your algorithm