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, ['C', '7103', '3123', '9575', 'y', '3583', 'm', '3311', '2453', '411', '5113', '6185', '7035', 'c', '2139', '6101', '8455', '4421']
answer:
9575y3583m33112453411


question:
7, 7, ['P', 'j', 'Z', '693', '3865', 'I', 'o', 'L', '185']
answer:
o


question:
6, 15, ['l', '5771', '9063', '4397', 'i', 'K', '7517', '4611', 'P', '3207', '4247', '2779', 'k', 'K', 'r', 's']
answer:

K75174611P320742472779kKr