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:
1, 2, ['6729', 'z']
answer:
6729z


question:
10, 12, ['8923', '3403', 'G', '3463', '2815', '3175', 'Y', 'S', '5771', 'r', '2019', '7745', 'S', 'Q', 'b', 'L', 'A', '1093']
answer:
r20197745


question:
9, 15, ['2191', '51', '8047', 'N', 'i', '8409', 's', 'B', 'a', 'f', '4729', 'q', '2409', '1301', 'c', '6987', '993', '8637', 'f']
answer:

af4729q24091301c