Definition: 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.
Input: 1, 17, ['N', '6771', 'B', 'i', 'O', 'y', '3167', 's', '1225', '6379', 'x', '6351', 'i', 'q', 'x', 'U', '3857', 'n', '6423', 'e', 'K', '5055', '5987']

N6771BiOy3167s12256379x6351iqxU3857