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:
18, 21, ['k', 'p', 'k', '115', '5813', '4665', '6773', '9965', 'F', '8533', 'c', '8893', 't', '7853', 'g', 't', '1889', 'd', '5063', '279', '9911', 'f', '95', '2895', 'R', '7785', '9179', 'g']

Ex Output:
d50632799911


Ex Input:
4, 6, ['s', 'o', '5677', '5881', '6197', '8349']

Ex Output:
588161978349


Ex Input:
17, 18, ['Q', '8251', 'B', '3185', 'q', '2879', 'Q', 'C', 'q', '9045', '6255', 'o', 'i', 'p', 'd', 'y', 'u', '9289', '8517', 'X', 'u', 'a', '479', 'b']

Ex Output:

u9289