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 concatenate all elements of A from the ith element to the jth element, and print 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.

[Q]: 1, 2, ['1723', '6539']
[A]: 17236539


[Q]: 5, 7, ['L', 'L', '1691', '2221', 'W', '5023', '3925', 'p', '8279', '2293', 'h', '9061', 'r', '2863', 'p', 'U']
[A]: W50233925


[Q]: 2, 3, ['H', 'R', '8713', 'f', '8269', '921', '1707', '1631', '2629', '4795', 'L', 'd']
[A]:
R8713