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: 13, 13, ['R', '6791', 'h', 'j', '4189', '2425', 'g', 'w', '343', '5621', '69', '9873', '939']

939