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: 19, 21, ['C', '2033', 'P', '8833', '4803', '1163', 'r', '2837', 'H', '7757', '7739', '2067', 'a', 'j', 'J', 'K', 'y', 'f', 'n', '4785', '243', 'p', 'Y', '7857', '9199', '9255', 'c']

n4785243