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:
9, 9, ['5503', 'f', 'g', 'B', '3003', '229', '4613', 'C', 'j', 'o']
answer:
j


question:
1, 4, ['63', '5429', '5563', '2045', '875', '7163', '1869']
answer:
54023655924536


question:
8, 13, ['c', 'u', '3753', '8849', 'v', '8727', '399', '2251', '4477', '1805', '1663', 'G', '2337', 'a', 's']
answer:

7332G3661508177441522