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, ['3665', '8799', 'M', '7717', '3221', '1957', '7631', '5299', '2455', '9331', 'N', '5847', '3955', 'W', 's', 'c', '3801', '733', 'u', 't', 'c']
answer:
sc3801733


question:
4, 4, ['r', 'P', '9883', 'Q']
answer:
Q


question:
13, 21, ['339', 'm', 'O', 'N', '6803', '6311', 'H', 'Q', 'l', 'v', 'a', 'J', 'n', 'y', 'd', 'y', 'i', 'U', 'z', 'u', 'Y', 'E', 'N', '6601', '7185', '7253', 'k', 'V', 'i']
answer:

nydyiUzuY