Definition: In this task, you are given inputs i,j, and A, where i and j are integers and A is a list. You need to concatenate all elements of A from the ith element to the jth element, and print the resultant string. i and j will be non-negative, and will always have a value less than the length of A. i will always be less than j.
Input: 17, 20, ['7723', '6603', '2051', 'O', '2823', '2355', 'D', 'W', '4071', 'D', '8071', '263', '7035', 'E', 'p', '7933', '357', 'K', 'c', 'y', 'I', 'K']

357Kcy