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:
7, 8, ['8843', '5431', 'X', 'g', '9661', 'x', '4869', '7651']
answer:
48697651


question:
1, 2, ['1723', '6539']
answer:
17236539


question:
2, 3, ['6349', 'Q', '3635']
answer:

Q3635