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, 8, ['7231', 'M', 'k', 'P', '1901', 'a', '1945', 'j', 'K', 'R']

7231MkP1901a1945j