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, ['4735', '4943', '391', '1951', '8785', '4869', '3971']
answer:
49433911951878548693971


question:
1, 5, ['8849', '5383', '4553', '4513', '9299', 'h']
answer:
88495383455345139299


question:
6, 12, ['G', 'c', 'u', '6603', 'D', 'E', 'Z', '6271', '4993', 'g', '1427', 'd', '4193']
answer:

EZ62714993g1427d