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, 2, ['U', 'G', 'N']
answer:
GU


question:
4, 6, ['5237', 'U', '7073', 'K', 'R', 'g', 'D', '17', 'I', '3039']
answer:
gRK


question:
5, 16, ['h', 'e', '4293', '4865', '7613', '1857', 'D', '3229', 'w', '5153', 'p', '9403', '1871', '8777', '9011', '2009', '6305', 'r', '9819', '3481', '3273', '6771', '6981', 'O', 'b', '2091', '2699', '5117', '4493', 'o']
answer:

20099011877718719403p5153w3229D18577613