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:
14, 18, ['6701', 'P', '8571', 'W', '6047', 'j', '3439', 'X', 'N', 'Q', '8533', 'c', 'n', 't', '5019', '2729', 'm', '3155', '4655', 'g', 'z', '2217', 'l', '6473', '9979']

Ex Output:
t50192729m3155


Ex Input:
2, 2, ['i', '941', 'g', '5495', 'U']

Ex Output:
941


Ex Input:
3, 4, ['U', '8619', '4111', 'x', 'P', 'k', '7957', 'i', '1977', '4145']

Ex Output:

4111x