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, 4, ['t', '6037', 'I', '2769', 'C']

SOLUTION: 9672I7306t

PROBLEM: 5, 14, ['S', '4231', '6377', '4559', '8213', '2583', 'Z', '3547', '4007', 'm', 'Z', '3671', '6455', '9961', 'm', '8539', '8627', '7379', 'q', '6557', '1469', 'G', '321', 'C', '5671', 'p', 'E', 'h']

SOLUTION: 169955461763Zm70047453Z38523128

PROBLEM: 7, 18, ['e', '3449', 'f', 'W', '1397', '9255', '4511', 'N', 'Y', '7971', '4665', 'p', 'M', 'X', 'g', '5337', '6817', 'd', 'C', 'X', 'Z', 'e', '5697']

SOLUTION:
d71867335gXMp56641797YN1154