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:
5, 7, ['L', 'L', '1691', '2221', 'W', '5023', '3925', 'p', '8279', '2293', 'h', '9061', 'r', '2863', 'p', 'U']
answer:
W50233925


question:
6, 8, ['8795', 'C', '3171', 'S', '2061', '6451', 'I', '8541', 'g', 'i', '1371', '9249', '861', 'v', '2341', 'a', '5443']
answer:
6451I8541


question:
1, 7, ['q', 'G', '8805', '1201', '6131', 'a', '3789', '9671']
answer:

qG880512016131a3789