TASK DEFINITION: In this task, you are given inputs 'i', 'j', and A, where 'i' and 'j' are integers and A is a list. A list is shown by two brackets and comma-separated numbers and characters inside, like ['1', '12', 'l']. You need to concatenate all elements of A from the ith element to the jth element, and then reverse the resulting 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'. Perform the operations in order, i.e., do not reverse first and then concatenate.
PROBLEM: 4, 17, ['897', 'R', 'L', '201', 'Z', 'o', 'A', '9367', 'E', 'G', '6653', 'i', 'V', 'F', '9433', 'G', '8073', '5739', '7009']

SOLUTION: 3708G3349FVi3566GE7639AoZ102

PROBLEM: 1, 1, ['341', '939']

SOLUTION: 143

PROBLEM: 8, 15, ['9787', 'J', '4471', '2137', '3587', 'G', 'K', '7463', '6027', 'v', '7073', 'Y', '8395', '8529', 'U']

SOLUTION:
U92585938Y3707v72063647