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, 5, ['Q', 'J', '983', 'W', 'b']
answer:
QJ983Wb


question:
9, 9, ['L', '2577', '9297', '6649', 'g', '2743', '2743', 'M', 'C', 'O', '3851', 'u', '9853', '1977', 'q', '3673', '7721']
answer:
C


question:
8, 20, ['l', 'I', 'Y', '7167', 'L', 'p', '3965', '9269', 'C', 'z', 'W', 'C', '2061', 'P', '9091', '5531', '1369', '4283', 'n', 'Z', '8639', '3971', 'I', '8179', '3313', 's', '1729', 'h', 'M', 'v']
answer:

9269CzWC2061P9091553113694283nZ