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:
4, 10, ['7991', '7969', '8383', '1935', 'U', 'Y', '6063', 'f', '985', '1303', '6245', 'c', 'j', 'P', 's']
answer:
1935UY6063f9851303


question:
9, 23, ['6307', 'p', 's', '2271', 'G', 'L', 'b', 'A', 'G', 'v', 'w', 'Y', 'm', 'J', 'g', '6387', 'X', 'H', '6071', 'A', '1599', '2863', 'n', '359']
answer:
GvwYmJg6387XH6071A15992863n


question:
2, 2, ['l', 'q', '6877']
answer:

q