instruction:
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.
question:
2, 4, ['U', '4013', '3925', '9017', '3425', 'H', '9015', '4053', '8915', '5945', '8979', '2203']
answer:
710952933104


question:
11, 24, ['1773', '8217', 'W', '3703', '5595', 'f', '9677', '1509', '6451', 'o', 'W', '4899', '4895', '6663', '1999', 'b', '147', 'h', 'R', '8621', '7049', '9943', 'S', '707', '8361']
answer:
707S349994071268Rh741b9991366659849984W


question:
5, 17, ['Y', 'c', '8505', 'n', '6221', '9419', '1539', 'N', '9945', '4649', '9733', '5479', 'I', 'V', '4857', 'v', 'w', 'g', 'd', '2783']
answer:

wv7584VI9745337994645499N935191491226