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, ['L', '7723']

SOLUTION: 3277L

PROBLEM: 2, 16, ['6623', 'E', 'S', '8679', '7465', '2769', 'G', '9635', 'Z', 'Y', '6593', '9535', '5247', '2185', '7071', 'P', '7897', 'm']

SOLUTION: P17075812742553593956YZ5369G967256479768SE

PROBLEM: 2, 5, ['9641', '3035', '7733', 'v', '765', 'S', 'L', 'c', 'y', 's', 'e', 'U', '3427', 'u', '9779']

SOLUTION:
567v33775303