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:
11, 13, ['C', '8587', '8773', '9485', 'u', '5029', '5629', 'X', '8277', 'I', '6243', 'V', '3093', 'e', '8129']
answer:
6243V3093


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:
4, 14, ['8321', 's', '83', 'z', '5449', 'e', '4381', '9513', '481', '4347', 'Q', '5887', 'Y', '1811', '9989', '999', '9619']
answer:

z5449e438195134814347Q5887Y1811