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:
2, 7, ['6269', '4995', 'K', 'C', 'p', 'd', '9839', '5131', '5131', '287', '2087']
answer:
4995KCpd9839


question:
3, 7, ['8537', '7133', 'N', '5905', 'C', '581', 'E', 'H']
answer:
N5905C581E


question:
6, 7, ['q', 'Z', 'm', 'k', '8429', 'V', '9691', 'H']
answer:

V9691