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: 8, 11, ['5431', '1923', 'q', '3877', 'V', '8511', 'y', '7705', '4121', '9815', 'L', 'Z', 'l', 'f', 'u', 'f', 'K', '2969', 'b', '8377', '7063']

770541219815L