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:
10, 12, ['2911', 'i', '1137', '3241', '3311', '4497', '4243', '5871', 'z', '3415', '8987', 'e', 's']
answer:
34158987e


question:
3, 11, ['5721', '1643', '6551', '7749', 'a', '7569', 'g', '847', '6151', 'a', 'B', '7515', 'u', '375', 'j', '6149', 'X', 'b', '4497']
answer:
65517749a7569g8476151aB


question:
5, 8, ['H', 'Y', '9261', 'j', 'x', 'K', '867', '2667', 'O', 'y', '3719', '3055', '8427', 'R', '4533', 'p', 'T', 'X', 'o', 'A', 'p', 'U', 'w', 'B', 'X']
answer:

xK8672667