instruction:
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.
question:
5, 6, ['U', 'E', 'k', '7897', 'R', '2025', '6683', 'a', 'U', '7765', '2065', '6065', 'Q']
answer:
R2025


question:
2, 9, ['4219', 'x', '2133', 'S', 'S', '6737', 'V', 'O', '4829', 'L', 'J', 'B', '4759', '5367', 'r']
answer:
x2133SS6737VO4829


question:
13, 16, ['f', '9455', '6463', 'F', 'M', '1713', '255', '2197', '8647', 'p', '3719', 't', 'q', '8231', 'd', '623', '5517', 'c', 'a']
answer:

q8231d623