TASK DEFINITION: In this task, you are given inputs i, j, and A, where i and j are integers and A is a list. You need to find all elements of A from the ith element to the jth element, reverse the order in which they occur, and then concatenate them to output the resultant 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 concatenate the elements and then reverse the string.
PROBLEM: 1, 1, ['8037', 't']

SOLUTION: 8037

PROBLEM: 3, 15, ['2345', 'c', 'B', '2961', '189', '2409', '3715', '6803', '3947', 'u', '7099', 'w', 'f', 'M', 'Q', '7533', 'm']

SOLUTION: QMfw7099u39476803371524091892961B

PROBLEM: 2, 20, ['N', 'N', 'n', 'f', 'E', '7217', 'B', '7957', '8477', 'A', '6293', '7123', 'P', '4601', '3237', '9561', 'S', 'Q', 'I', 'p']

SOLUTION:
pIQS956132374601P71236293A84777957B7217EfnN