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:
4, 8, ['R', 'D', 'x', 't', '6721', 'w', 'V', 'v', '6427', 'L', '2487', 'W', '7339', '9515', 'a', 'I', 'E', '3897', '4869']

Ex Output:
t6721wVv


Ex Input:
5, 5, ['m', '6561', '8687', '4209', 'x', 'u', 'D', '3673', '6175', '5195', 'n', '71', 'h', 'U', '1899', '4559', '2419', 't', 'a', '4165']

Ex Output:
x


Ex Input:
21, 25, ['c', '4157', 'a', 'S', 'I', '4253', '8569', '4615', '5967', 'P', 'c', '1285', 'd', '5571', '8993', 'r', 'G', 'D', '7831', '7547', 'P', 'd', '3885', '9681', '771', 'R', 'f', '8117', '3403', 'Z']

Ex Output:

Pd38859681771