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:
7, 8, ['6921', '3459', '5521', '6215', 'r', '8397', 'R', '8499', '6683', '6595', '8315', '965', '3055']

Ex Output:
R8499


Ex Input:
6, 18, ['1583', 'k', '8481', 'W', 'E', 'M', 'b', 'N', '3573', 's', '4401', 'g', 'Z', '5311', 'j', '1747', '5435', '4135', '5195', '8781', '3313', '4065', 'N', 'I', '9645', '3581', 'Q', 'u']

Ex Output:
MbN3573s4401gZ5311j174754354135


Ex Input:
6, 11, ['h', '923', 'S', '2111', '637', '1739', 'L', 'K', '425', '9901', 'i', 'W']

Ex Output:

1739LK4259901i


