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, 18, ['5143', 'g', '3719', 'E', '9337', 'E', 't', 'y', 'C', 'I', 'v', '9861', 'A', '6939', 'X', 'v', '41', '2671', 'r', 'g', '4043', '2601', '7441']

3719E9337EtyCIv9861A6939Xv412671