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.

Ex Input:
14, 17, ['7891', 'n', '3475', 'c', '3281', 'Y', 'R', '5745', '4195', 'c', 'r', 'D', '7707', 'V', '7313', '8857', '1849', '5591', '553', '8389', '3833', 'm', 'v', '3663', 'k', 'U', 'o', 'p']

Ex Output:
948175883137V


Ex Input:
2, 3, ['U', 'U', '5201', '4581', '2943', 'B', 'j']

Ex Output:
1025U


Ex Input:
7, 14, ['4169', 'r', 'P', 'P', '9269', 'Z', '803', '4287', 'Z', '4733', 'q', '3245', '9675', 'Q', 'k', 'o', 'o', '7223', '7685', 'a', '9687', '8503', 'J']

Ex Output:

Q57695423q3374Z7824308