instruction:
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.
question:
10, 13, ['c', '9643', '191', 'N', 'n', '2273', 'a', 'q', 'T', '7775', 'v', 'c', '8889', 'G', '533']
answer:
8889cv7775


question:
9, 21, ['d', 'K', '4747', 'J', '5273', 'R', '5449', '6823', '2003', 'M', '3201', 'D', '5025', '5151', 't', '5203', '1073', 'E', 'O', 'M', 'R', '3039', '4781', 'b', '6819', '4025', '9125', '3733', 'x']
answer:
RMOE10735203t51515025D3201M2003


question:
1, 18, ['1663', '7111', 'c', '3171', '6053', 't', 'G', 'r', 'g', 'I', 'e', '5559', '5173', '8949', 'M', 'R', '8659', '1019', 'm', '2931', '9915', 'k', '6551', '7059']
answer:

10198659RM894951735559eIgrGt60533171c71111663