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, 7, ['193', 's', '6617', 'a', 'Y', 'e', '8931', '9801', '3025', '4753', 'c', 'n', '6923', '3925']
answer:
1398eY


question:
1, 4, ['B', '5591', '1237', '1519']
answer:
915173211955B


question:
15, 16, ['5807', '4417', '603', '4391', 'u', '3407', '2625', '2341', 'J', '831', '8385', 'D', '2205', '539', '9943', '3097', '5341', '7473', 'j', 'Z', '2693', '6291', 'o', '5443', 'O', '6635']
answer:

79033499