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:
10, 11, ['7999', 'F', '7363', 'E', 'j', '825', 'i', 's', '5691', '1837', '6625']

Ex Output:
18376625


Ex Input:
1, 1, ['e', '7739', '8007']

Ex Output:
e


Ex Input:
4, 4, ['8721', 'q', 'O', 'a', 'G', '4353', 'k', 'Z', 'n', '6747', '7311', 'C', 'o']

Ex Output:

a