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:
2, 5, ['7791', '8561', 'r', 'e', '7821', '2611', '1', 'P', 'n', '4097', 'z', 'a', '9589', 'M', '8867']

Ex Output:
8561re7821


Ex Input:
11, 20, ['4081', '915', 'e', '765', '4125', '9603', '1557', 'C', 'L', 'k', 'd', 'h', '5317', 'J', '8587', 'm', 'B', '273', 'K', 'b', '951', '2385', 'v']

Ex Output:
dh5317J8587mB273Kb


Ex Input:
1, 1, ['6369', '4647']

Ex Output:

6369