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, 2, ['k', 'A', '2153']

SOLUTION: Ak

PROBLEM: 2, 14, ['35', 'w', 'N', 'C', 'l', '9715', '8003', '9111', '6737', '5455', '5365', '859', '5979', 'U', 's', 's', '9599', 'g', '4577', '527', 'V', '5979']

SOLUTION: U9795958563555457376111930085179lCNw

PROBLEM: 8, 17, ['N', '1459', '1561', 'Q', '6665', 'z', '6179', 'j', 'V', '3989', '9371', '265', 'Y', 'v', 'H', 'O', 'I', 's', 'S', '7913', '333', '6137', 'g', '8425', '4571']

SOLUTION:
IOHvY56217399893Vj