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:
1, 3, ['6017', 'o', '1817', 'W']
answer:
7181o7106


question:
17, 18, ['1795', '6295', '9741', '1375', '8077', 'y', '6465', 'q', '889', 'E', 'N', 'S', '6665', 'H', '2343', 'J', '3369', '5475', 'e', '9991', 'B', 'E', '2317', 'a', 'T', '7337', 'G', '2469', 'D']
answer:
57459633


question:
5, 9, ['4637', '7539', 'E', '7111', 'd', 'n', '3263', '131', 'D', 't', 'z', '7987', 'A', 'w']
answer:

D1313623nd