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: 16, 22, ['U', '8045', 'y', 'I', '4971', '8109', '3563', 'f', 'm', '6235', '8539', '9191', '2001', 'Z', '1733', 'Q', '4145', 'u', '4021', '3819', '6465', '7227']

Q4145u4021381964657227