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:
1, 6, ['l', '1137', 'c', '3537', 'p', '4561', '2819', '9705']
answer:
l1137c3537p4561


question:
4, 8, ['G', 'f', 'x', 'd', '723', 's', 'J', '5709', 'Q', 'K', '4341', '3731', '3705', 'g', 'c', 'u', 'j', '861', '3793', '8695']
answer:
d723sJ5709


question:
1, 1, ['553', '6969', '1895']
answer:

553