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:
8, 19, ['r', '7451', 'X', 'l', 'S', 'v', '4807', '4851', '8849', '3993', 'w', 'Z', '1419', '9185', 'N', '2285', '13', 'm', 'd', 'Y', 'j']
answer:
dm315822N58199141Zw399394881584


question:
10, 17, ['3583', 'B', 'h', '2719', 'Y', '4557', 'K', '6897', '6245', '599', 'x', 'G', '4969', 'g', 'm', 'i', 'e', '1619', '5123', 'P', '1139', 'i', '3569', '2577']
answer:
eimg9694Gx995


question:
2, 3, ['v', 'n', '9483', 'm']
answer:

3849n