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: 1, 18, ['4729', '2591', '5309', 'L', 'F', '4977', 'I', 'E', '189', 'g', 'T', '3251', 'O', 'Z', '511', 'd', 'L', 'w']

SOLUTION: wLd115ZO1523Tg981EI7794FL903519529274

PROBLEM: 4, 22, ['5409', 'h', 'u', 'C', 'b', '7979', 'M', '6477', 'k', 'G', '1997', '9033', '2637', 'l', 'y', '8427', '5107', '6743', '5677', '2471', '2225', 'E', 'Q']

SOLUTION: E522217427765347670157248yl736233097991Gk7746M9797bC

PROBLEM: 1, 8, ['6545', 'm', '8093', '7573', '6115', '3097', '931', '845', 'h']

SOLUTION:
5481397903511637573908m5456