Definition: 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.
Input: 3, 9, ['R', '9663', 'a', 'K', '317', 'd', 'y', 'J', '4509', '1421', 'z', '6527', '5849', 'O', 'r']

aK317dyJ4509