instruction:
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.
question:
15, 16, ['477', 'w', '3757', '153', 'F', '8237', 'T', 'F', '6691', '4859', '4421', 'r', 'U', 'O', 'e', '3579', '589', 's', 'Q', 'h', '9889', '5355']
answer:
e3579


question:
8, 9, ['2641', 'T', 'Q', '2291', '507', 'D', 'd', 'd', '9645', 'h', '3799', 'M', 'u', 'H']
answer:
d9645


question:
5, 18, ['2531', 'm', '5373', '6921', 'L', 'g', '2207', 's', 'f', 'K', '6447', 'a', 'q', '503', 'L', 'K', '4947', 'F', '8275', 'g', 'p', 'i', '3557', '2713', 'v', 'N', '3831']
answer:

Lg2207sfK6447aq503LK4947F