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: 7, 7, ['5785', 'G', '8741', '2223', '1863', 'Y', '1631', '519', '8563', '9015', 'u', 'N', 'U', '1787']

1631