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, 7, ['q', 'G', '8805', '1201', '6131', 'a', '3789', '9671']
answer:
qG880512016131a3789


question:
2, 16, ['5271', 'H', 'z', 'M', '2793', 'h', 'C', 'J', '3517', 'Q', 'R', 'm', 'j', 'p', '1461', 'U', 'Q', 'P', '7079', '4695', '4029', '8635', 'x']
answer:
HzM2793hCJ3517QRmjp1461U


question:
8, 17, ['6887', 'l', '5689', 'Z', '3241', '5739', 'm', '87', '6421', 'V', '9889', '4539', '5493', 'b', '7813', '4563', 'K', '9143', '7555', '7659', 's', 'a', 'E']
answer:

876421V988945395493b78134563K