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:
3, 5, ['8397', '4785', 'm', '3449', 'c', 'W']
answer:
m3449c


question:
3, 12, ['i', 'T', '5733', '851', 'v', 'U', '6993', '7781', 'B', '5461', 'G', 'O']
answer:
5733851vU69937781B5461GO


question:
5, 14, ['K', '943', '9145', '3193', '1221', '4863', 'I', '9287', 'L', 'D', 't', 'F', 'V', '1115', '7777', 'A', '7653', '1577', '5471', '6277', '1659', 'p', 'W', '309', '6277', '3611', 'N', '7243']
answer:

12214863I9287LDtFV1115