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: 3, 5, ['f', '3797', 'm', 'Q', 'g', '1147']

Answer: mQg


Question: 8, 23, ['5435', 'U', 'u', 'D', '2923', '1773', '977', 'r', '4341', 'v', '3685', 'i', '3605', '6297', 'x', '4065', '6503', 'c', '6943', 'r', 'e', '193', '2413']

Answer: r4341v3685i36056297x40656503c6943re1932413


Question: 12, 20, ['v', 'O', 'K', 'p', '9857', '9099', 'X', 'T', '3569', '969', '3039', '8753', '4237', '8965', '9591', '4197', '5855', 'X', 'd', '7291', 'u', '8871']

Answer:
875342378965959141975855Xd7291