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:
15, 18, ['9781', '4365', '6517', 'u', 's', '9177', '8749', 'V', 'w', 'M', '5559', '5421', 'R', 'N', 'I', '5705', 'w', '5821']
answer:
I5705w5821


question:
2, 4, ['I', 's', 'd', '7253', '4377', '691', '4419']
answer:
sd7253


question:
17, 19, ['Q', 'W', 'J', 'n', 't', '9031', 'W', 'W', '3149', '3293', 'P', '4405', '2097', 'n', '9845', '4823', 'c', 'b', '5491']
answer:

cb5491