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:
4, 14, ['h', 'P', 'u', '419', '8659', 'J', '3273', 's', 'm', '449', 'O', 'b', '9519', '5433', 's', '3921', '7405', 'l', 'q', 'b', '5663', '3063']
answer:
4198659J3273sm449Ob95195433


question:
15, 16, ['477', 'w', '3757', '153', 'F', '8237', 'T', 'F', '6691', '4859', '4421', 'r', 'U', 'O', 'e', '3579', '589', 's', 'Q', 'h', '9889', '5355']
answer:
e3579


question:
17, 21, ['d', '8123', 'u', '6045', '6167', 'b', '4021', 'z', 'g', '5937', '7649', 'M', 'v', '3099', 'W', 'J', 'T', '1535', 'W', '7625', '409']
answer:

T1535W7625409