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: 18, 19, ['5091', '7347', '5079', 'K', 'D', 'c', 'S', '8585', '1697', 't', '6371', '1631', '5419', '7091', '6743', 'n', 'h', 'U', 'F', 'A', '973']

UF