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, ['A', '8103', '7829']
answer:
3018A


question:
10, 12, ['p', '6907', 'D', 'B', 'z', 'S', '3197', 'b', 'K', 'B', '2925', 'i', 'U', 'y', '5577', '1065', 'e', '7763', 's', '9493']
answer:
i5292B


question:
2, 11, ['h', 's', '9565', 'W', '3283', '5843', '8911', '1045', '3027', '5713', 'C', 'V', '9371', '7369', 's', 'N', '5327', 'R', '1069', 'G', 'N', 'H', '6163', 'j', 'X', 'e', 'm', 'S', 'I', '2117']
answer:

C317572035401119834853823W5659s