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, 6, ['7319', 'U', 'Z', '1163', '8123', '4861', '117', '3893', '2489', 'S', '1511']
answer:
16843218


question:
22, 26, ['V', 'O', '511', 'c', '4015', 'P', 'R', 'L', '115', 'L', '6809', 'S', '2397', 'X', 'e', 'Y', 'I', 'O', '8125', 'u', 'r', '9403', 'Q', 'i', '5835', 'U', 'm']
answer:
U5385iQ3049


question:
21, 25, ['M', '2501', 'c', '459', '2287', '2977', '5197', '3583', 'r', 'N', 'N', 'r', '1737', 'e', '9481', 'q', 'y', 'Y', 'l', '4921', '4579', '3677', '3731', 'X', 'M', 'm', '7895', 'j', 'V']
answer:

MX137377639754