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:
11, 15, ['4565', 'Q', 'C', '8503', 'n', 'B', 'r', '8589', 'h', 'v', 'B', '5755', 'h', '3595', '9739', 'X', 'n', '5393']
answer:
93795953h5575B


question:
2, 27, ['d', 'L', 'o', '3417', 'J', '2183', '8813', '2469', '3583', '8225', 'o', 'q', 'N', '3215', 'V', 'f', '7371', 'F', '6797', 'R', 'X', '2245', 'P', 'v', '4347', 'k', 'K', 'O']
answer:
Kk7434vP5422XR7976F1737fV5123Nqo52283853964231883812J7143oL


question:
1, 1, ['P', 'X', 'W']
answer:

P