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.

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

Ex Output:
C


Ex Input:
12, 14, ['G', 's', '6511', '8053', '985', 'D', 'i', '8803', 'U', 'Q', '9633', 'I', 'M', '2937', '4257', '6545']

Ex Output:
IM2937


Ex Input:
1, 2, ['k', 'y']

Ex Output:

ky