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: 3, 4, ['J', 'p', '3755', 'j', '4521', 'J', 'X', '727', '5699', '6799', 'H', 'A', '7749', '1259', '6977', '1727']

3755j