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: 4, 7, ['2719', '5555', 'g', 'U', '6579', '2279', 'k', 'g', '6871', 'O', 'I', 'Z', '7707', '4053', 'd', 'U', 'n', '6671', 'Y', 'y']

U65792279k