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, 13, ['1963', 'l', '8291', 'K', 'q', '5567', '5123', 'L', '6155', '1313', 'U', '9199', '8555', '7115', 'X', 'U', 'e', '8077']

SOLUTION: 85559199U13136155L51235567qK8291l1963

PROBLEM: 10, 20, ['G', 'Y', 'M', 'F', 'Y', '6993', '9057', '5529', '35', 'D', '6173', '1043', '5845', 'V', 'd', '7497', '9035', 'r', 'U', '5155']

SOLUTION: 5155Ur90357497dV584510436173D

PROBLEM: 3, 11, ['s', 's', 's', '4831', 'a', 'a', '2987', '2331', '5611', '359', '2115', '1161', 'P', '5155', '7697', '6703', '9709', 't', '3651', 'A', 'b', '5253', 'Q', '1697', 'd', '5513', '5329']

SOLUTION:
2115359561123312987aa4831s