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: 17, 20, ['n', '6317', 'G', '4411', 'd', '3009', '8307', 'j', '2195', 'z', '1127', '6677', 'h', 'U', 'p', 'T', '6671', 'Q', 'm', '8171', '8019', '9787', 'N', 'v']

6671Qm8171