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:
5, 12, ['6701', '3911', '1591', '3829', '3381', 'J', '8635', 'r', '8867', 'N', '2397', '1677', 'c', '9799']
answer:
77617932N7688r5368J1833


question:
16, 16, ['4793', '8319', 'F', 'L', 'W', 'f', '3003', 'P', 'w', '8231', 'J', 'D', '5091', '5577', 'w', '2211', 'Q', 'a', 'd', '3203', 'v', 'U', '7765', 'S', 'K', '2737', 'R', 'D', 'r', '5487']
answer:
1122


question:
7, 17, ['7407', 'L', 'U', '3107', '353', '4333', '8301', 'u', 'y', '1483', 's', '1593', '5327', '2207', 'e', '3493', '8177', 'k']
answer:

77183943e702272353951s3841yu1038