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: 7, 8, ['4367', '4367', 'm', '5681', '931', '9039', '8313', '6335', 'w', 'd', 'V', '1741', '1703', 'I', 't', 'a', 'P', 'P', 'x']

SOLUTION: 53363138

PROBLEM: 2, 3, ['S', 'O', 'U', '3453', '4249']

SOLUTION:
UO