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:
15, 25, ['n', '4163', '6355', '4085', 'u', 'X', '7669', 'c', '791', '7517', '3153', 'k', 'S', '1263', 'P', '1613', 'q', '7693', '339', '7041', '3591', '9429', '4695', '2959', 'm', 'g', '2827', '6699', '1243', 'Y']
answer:
m959259649249195314079333967q3161P


question:
3, 4, ['E', 'k', '4697', 'f', 'J', 's', '1265', '4673', 'D', '3345', 'n', '5593', '2249', '5951']
answer:
f7964


question:
8, 24, ['E', 'W', 'i', 'R', '587', '3289', 'S', '491', 'X', 'P', 'Z', 'C', 'v', 'R', 'Y', '7043', '3493', '4317', '87', '565', 'q', '6197', 'E', '7495', '3673', 'a', '3625', '6015', '2909']
answer:

5947E7916q56578713439433407YRvCZPX194


