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: 1, 16, ['c', 'R', '3865', 'o', 'F', '1907', 'b', '2693', 'P', 'p', 'u', 'w', '3071', '9417', '6481', 'U', 'j', 'N', '7831', '2587', 'F']

cR3865oF1907b2693Ppuw307194176481U