TASK DEFINITION: In this task, you are given inputs 'i', 'j', and A, where 'i' and 'j' are integers and A is a list. A list is shown by two brackets and comma-separated numbers and characters inside, like ['1', '12', 'l']. You need to concatenate all elements of A from the ith element to the jth element, and then reverse the resulting 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 reverse first and then concatenate.
PROBLEM: 13, 14, ['5913', '6823', '5945', 'a', '8191', 's', '5405', 'l', '2515', '3901', 'R', '1575', 'e', 'P', '9231', '39', '6651', 'N']

SOLUTION: Pe

PROBLEM: 2, 5, ['1987', '3507', '839', '3509', '9857', 'V', '9987', 'g', 'G', '7295', 'v', 'b', 'o', 'Q', 'Q', 'x', '3295', '9917', 'R', '221']

SOLUTION: 758990539387053

PROBLEM: 3, 7, ['3359', '5701', 'v', 'S', '5107', '501', 'X', 'o', 'j', 'T', 'v', '1041', '1645', '4119', '8315', '1845']

SOLUTION:
X1057015Sv