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: 5, 6, ['f', 'P', 'B', 'y', '2525', 'u', 'f', 'f', 'c', '4325', '6341', '4435', '1843', 'g', 'U', 'F', 'E', 'J', 'H', '8375', 'l', 'g', '3257', 'W', 'u', '8615', '9887', 'O']

2525u