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, 5, ['Q', 'J', '983', 'W', 'b']
answer:
QJ983Wb


question:
6, 20, ['4769', '8075', 'N', '125', '5439', 'R', '4201', 'j', 'z', 'x', '3169', 'd', '1561', '7995', 'F', 'T', 'F', 'v', 'Z', '9517', 'e', 'I', '7765', 'o', '4659', 'N', '3963']
answer:
R4201jzx3169d15617995FTFvZ9517


question:
5, 6, ['7261', '3509', '6391', '3905', 'O', '4331', 'f', 'C', 's', '3459', '1825', '3003', '7969', 'y']
answer:

O4331