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:
14, 15, ['b', '863', '5093', '7589', '6635', 'X', '863', '8197', '3571', 'u', 'J', '1331', 'M', 'z', '9965', '3989', '2677', 'm']
answer:
9965z


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, 1, ['C', 'c', 'B', '6245', 'x', 'Q', '7977', '7173', 'E', 'U', '9639', '8383', '7155', '4583', '7783', 'P', 'g', '5665', 'Y', '7505', 'J', '585', 'O', '4533', 't', '9177', 'd', '607', 'D']
answer:

C