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 find all elements of A from the ith element to the jth element, reverse the order in which they occur, and then concatenate them to output 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. Perform the operations in order, i.e., do not concatenate the elements and then reverse the string.
Input: 17, 20, ['m', '1277', 'h', 'x', '5233', '6795', '4995', '3457', '6567', 'O', '4399', 'X', '5959', 'S', '7167', 'y', '9529', '1757', '4599', 's', 'f']

s459917579529