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: 6, 10, ['679', 'o', '2919', '3351', 'I', '6403', 'L', '4103', 'Q', 's', '6827', '2421', '3529', '6349', '6945', '8125', '2897', 'N']

6403L4103Qs