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, 2, ['S', '411', '3257', 'c', '3483', 'i', 'h', 't']
answer:
114S


question:
2, 3, ['2923', 'F', '4033', 'V']
answer:
3304F


question:
3, 3, ['t', '9159', 'X', '8737', 'R', '5491']
answer:

X