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: 3, 17, ['103', '97', 'B', '4861', 'D', 'z', 'k', '513', 'R', '6673', 'i', '9773', 'C', 'k', '4639', 'K', 'L', '1291', 'p', 'f', '7535', 'h']

B4861Dzk513R6673i9773Ck4639KL