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:
2, 5, ['3823', 'P', '9615', '6979', '5511', '7483', '4315', '6363', 'u']
answer:
P961569795511


question:
1, 2, ['87', 'd']
answer:
87d


question:
6, 7, ['5451', 'B', '6233', '3489', '9891', 'D', 'b', 'G', 'j', 'D']
answer:

Db