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: 10, 20, ['h', '2053', '5801', '1545', 'R', '6527', 'i', 'o', 'c', 'u', '2103', 'u', 'Z', 'E', '4871', 'Q', '7269', 'Z', '8603', 'Y', 'n', '1097', '9665', '8609', '6445', '9893', '3073', '8747', 'S', 'm']

u2103uZE4871Q7269Z8603Y