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:
6, 6, ['6237', '5511', '7211', '1509', '7331', '9547']

Ex Output:
9547


Ex Input:
2, 18, ['9999', '5437', '9821', 'o', '4457', '4227', 'v', '4715', '9195', 'I', 'J', 'o', '443', '8377', 'j', '1185', 'K', 'z', 'q', '8353']

Ex Output:
54379821o44574227v47159195IJo4438377j1185Kz


Ex Input:
3, 5, ['7711', 'l', 'u', 'n', '3159', '9309']

Ex Output:

un3159