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:
6, 14, ['i', 'b', 'Q', '8123', 'O', '2561', '2109', '1331', '4609', 'g', 'g', '1971', 'D', 'i']
answer:
2561210913314609gg1971Di


question:
5, 5, ['7173', 'b', '9573', 'O', '8047', 'f']
answer:
8047


question:
2, 4, ['4641', '7097', 'v', 't', 'm']
answer:

7097vt