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:
10, 15, ['1135', 'N', '4053', 'k', 'V', '2313', '4827', '549', '23', '223', 'y', 'L', 'r', '7031', '7605']
answer:
50671307rLy322


question:
1, 1, ['4865', 'y']
answer:
5684


question:
1, 5, ['2215', 'o', 'v', 'G', '6625', 'r', 'j', '6141', '1649', '2687', '6943', 'w']
answer:

5266Gvo5122