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:
7, 8, ['9045', 'C', 'V', 'G', 'Q', 'I', '9821', 'D']
answer:
9821D


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, 10, ['m', 'g', 'Y', 'B', '7603', 'c', 'A', '7061', 'L', '8837', 'R', 'A', '1061', '7475', 'Y', '457', '4189', 'P', 't', 'B', '5907', '797', '9263', '963', '673']
answer:

B7603cA7061L8837