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, ['P', 'i', 'b', 'e', '3967', 'L']
answer:
Pibe3967L


question:
1, 1, ['6369', '4647']
answer:
6369


question:
3, 3, ['453', '7051', 'F', '6671', '5221', '4257', '2081', '5871', 'o', 'l', '6635', 'p', 'F', '6137', 'G', 'T', 'g']
answer:

F