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: 2, 10, ['5015', 'Q', '5439', 'x', 'b', 'P', '2953', '861', '5423', '5307', '5507', '7177', '1241', '2551', 'z', 's', 'k', 'F', '741', 'F']

Q5439xbP295386154235307