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, ['3149', '8605', '3995', 'R', '4511', 'W', '9457', 'P', '8439', '1467', 'Y', '7429', 'D', 'R', '4749', '3351', '2555', 'Q', 'F', 'u', '6815', 'B', '4005', '8113', 'A']

Ex Output:
8439


Ex Input:
2, 7, ['6269', '4995', 'K', 'C', 'p', 'd', '9839', '5131', '5131', '287', '2087']

Ex Output:
4995KCpd9839


Ex Input:
3, 5, ['q', '2287', '6269', 'l', 'p', 'T', 'q', 'L', 'C', 'a']

Ex Output:

6269lp


