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:
6, 8, ['O', 'q', '4221', 'c', '8051', 'V', '639', 'E', 'X', '8367', 'g', 'K', '2951', '6485', '7635', 'q']

Ex Output:
V639E


Ex Input:
7, 10, ['6843', 'X', 's', 'y', 'k', 'o', 'k', '2095', 'b', 'A']

Ex Output:
k2095bA


Ex Input:
2, 3, ['2711', 'B', 'U', '7223']

Ex Output:

BU