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: 4, 7, ['c', '9431', '2475', 'K', '8955', '407', '773', 'p', '2555', 'D', 'u', '2101', '7429', '7871', '1087', 'D', 'y']

K8955407773