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: 5, 14, ['p', 'q', '2787', 's', 'C', '4333', 'Y', '9223', 'S', '1719', 'A', '3693', '4291', '8065', '5635', 'r', '2001']

C4333Y9223S1719A369342918065