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: 2, 3, ['257', '2971', 'I', 'U', 'a', '3979', 'J', '7651', '9957', '1757', '3107', 'F', 'i', 'g', '8507', 'F', 'q', '5167', 'E', 'x', '399', 'f', 'v', 'p', 'x', '337', '1591', 'f']

2971I