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, ['u', '3017', '4149', 'z', '9231', 'C', '7461', 'e']
answer:
1647C1329


question:
6, 14, ['505', 's', '3619', 's', '2871', '6403', 'b', 'M', 'Q', '9645', '9425', 'V', '873', 'l', '2917', 'Q', '9465', 'z', '1513', 'S', 'e', '9733', '7669', 'B']
answer:
l378V52495469QMb3046


question:
3, 5, ['9923', '7043', '4329', 'V', 'D', '4663', '3489', 'l', 'B', 'i', '6527', '7409', '3279', '2275', 'Q', '5291']
answer:

DV9234


