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, ['k', '9837']
answer:
k9837


question:
6, 7, ['1277', '1589', 'Z', 'U', '507', '4913', 'g', '4789']
answer:
4913g


question:
16, 17, ['Q', '5403', '8117', '5993', '6069', '8559', '2439', 'm', '7675', 'e', 'u', '9217', '8943', 'U', '8579', 'D', 'm', '6391', 's', 'Q', '6247', '6855', '5147']
answer:

Dm