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:
3, 9, ['y', '5877', '5963', '7733', 'c', 'U', '9497', 'X', '4111', '5007', 'h', '6249', 'e', 'G', '1391', '5707', '2877']
answer:
59637733cU9497X4111


question:
6, 7, ['9747', '2771', '8633', '4251', 'v', 'r', '6949', 'm', 'r', 'H']
answer:
r6949


question:
19, 23, ['Z', 'c', '3679', '7181', 'k', '1083', 'a', '2743', 'T', '4129', '5691', 'E', '2213', '813', '8803', '5125', '6319', '9403', 'M', 'M', 'X', '2803', 'F']
answer:

MMX2803F