instruction:
In this task, you are given inputs i, j, and A, where i and j are integers and A is a list. You need to find all elements of A from the ith element to the jth element, reverse the order in which they occur, and then concatenate them to output the resultant 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 concatenate the elements and then reverse the string.
question:
1, 1, ['U', 'R']
answer:
U


question:
7, 9, ['6997', '4095', '7629', '9191', 'l', '1345', '6633', 'Q', 'F', 'Z', '8353', '57']
answer:
FQ6633


question:
2, 12, ['6565', '7871', 'g', 'q', '361', 'R', '9385', 'T', '7243', 'e', '5075', '4635', 'k', '3703']
answer:

46355075e7243T9385R361qg7871