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:
8, 11, ['F', '8031', '1539', '6973', '3103', 'I', '9639', 'm', 'x', 'j', '9811']
answer:
mxj9811


question:
13, 20, ['D', 'y', 'n', 'A', '1611', 'k', 'I', '3431', 'M', '205', 'p', '211', '9233', '2193', 'h', '8671', 'a', '2321', 'o', '5209', 'q']
answer:
92332193h8671a2321o5209


question:
6, 10, ['u', '3353', '249', 'z', '7507', 'Z', 's', '9531', 'x', 'U', '7421', '4765', '743', '6391']
answer:

Zs9531xU