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.

Ex Input:
18, 22, ['R', '7403', 'b', 'R', 'y', '5343', '2589', '917', 'f', '5383', 'Q', 'f', '5491', 'j', 'v', '5073', '923', '5491', '6737', 't', 'S', 's']

Ex Output:
54916737tSs


Ex Input:
14, 16, ['4115', 'o', 'b', '7745', '4911', 'x', 'p', 'H', '3859', '9637', 'U', '553', 'N', '4741', 'V', '3881']

Ex Output:
4741V3881


Ex Input:
6, 8, ['Y', 'f', '6173', 'i', '7647', '649', '9623', 'a', '8591', 'n', 'D', '873', 'J', '2709', '405', '7757', 'p', '2405', '5399', 'D']

Ex Output:

6499623a