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:
30, 30, ['7149', 't', 'W', '5821', '1189', '4423', 'T', 'x', '5131', '9015', 'H', 'k', 'J', '9951', '5697', '1953', 'X', '8691', '3581', '7319', '6977', '8031', '6179', '2109', 'F', 'Y', 'G', '1065', 'y', '869']
answer:
968


question:
2, 6, ['6717', '6639', 'l', 'i', 'o', '1819']
answer:
9181oil9366


question:
10, 24, ['p', 'v', 'C', 'o', '7037', '9457', 'o', 'a', '1113', '8405', '4413', 'Y', 'l', 'C', 'G', '6191', 'x', 'p', '379', 'b', '2965', 'N', 'K', '8421', 'O', 'I', 'g']
answer:

1248KN5692b973px1916GClY31445048