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: 14, 14, ['8135', '9691', '2309', 'm', '2363', '4775', '8597', 'E', 'z', 'I', 'k', '8569', 'p', '8781', '4145', 'Y']

8781