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: 2, 4, ['i', '2555', 'G', '4549', 'a', '7443', '5361']

SOLUTION: 9454G5552

PROBLEM: 4, 5, ['3001', '661', 'S', 'N', '7919']

SOLUTION: 9197N

PROBLEM: 6, 13, ['H', '5089', 'c', 'A', 'M', '247', '3739', 'L', '5977', '3777', '9775', '4811', 'b', '7773', '8291', '7107', '719']

SOLUTION:
b1184577977737795L9373742