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:
10, 13, ['K', '6565', 'A', '5073', '1249', '2817', '3663', '3799', 'G', '2707', '3405', '5999', '5577', 'c', 'p', 'V', '8373', 'e', 'W', '5977', 's', 'p', 'E', '5425']
answer:
7755999550437072


question:
1, 15, ['o', '7861', '5335', '835', 'e', '8077', 'd', '3099', 'F', 'q', 'C', 'F', 'M', '4715', '2669', 'D', '1517', '4361', 'e', 'v', 'P', '6813', 'q', '9075', '9997', '8799', 'L']
answer:
96625174MFCqF9903d7708e53853351687o


question:
3, 9, ['9515', 'i', 'F', '5977', '4295', '6019', '609', 'b', 'a', '9385', '6451', 'F', 'Q', 'Y', 'K', 'a', '2329', 'F', '9471']
answer:

ab906910659247795F