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: 4, 8, ['C', '5607', 'R', '7019', 'D', '801', '4351', '1879', 'm', '7517']

7019D80143511879