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:
16, 18, ['373', 'q', '5873', 'R', 'Y', 'O', 'r', 'U', '5249', '3393', '355', '931', '1621', '4269', 'M', 'Q', '1051', '9755', '5463', '9821', 'x', 'y', 'j', 'W', '6795', 'X', 'H', 'G', 'u']
answer:
Q10519755


question:
8, 17, ['2113', 'B', 'Y', 'i', '1123', 'H', '8593', 'y', 'b', '2319', '5525', 's', 'b', '2331', '1405', 'R', '2979', '3577', '2713', '9015', 'y', '7201', '8713', '1647', '9443', 's']
answer:
yb23195525sb23311405R2979


question:
7, 20, ['F', '6517', '6293', 'n', 'd', '9333', 'H', 'E', '4019', '7579', 'u', '575', 'R', '4803', '367', 'K', 't', 'k', 'V', '3773', '1411', '7171', '2963', '6867', '6751', 'h']
answer:

HE40197579u575R4803367KtkV3773