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, 2, ['i', '8137', '603', 'R', '8825', 'g']
answer:
i8137


question:
7, 8, ['8843', '5431', 'X', 'g', '9661', 'x', '4869', '7651']
answer:
48697651


question:
3, 7, ['2007', 'P', 'X', 'A', '811', 'x', 'C', 'A', '4829']
answer:

XA811xC