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: 10, 13, ['6263', '2475', '4125', '425', '5399', '9001', 'x', '2141', 'v', '8099', '9743', '5973', 'U', 'I', 'j', 'C']

809997435973U