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: 1, 2, ['y', 'n', 'a', '4367', 'Q', 'S']

SOLUTION: ny

PROBLEM: 18, 22, ['I', '4687', 'V', 'y', 'U', '2255', '6971', '793', 'W', 'O', '3233', '5061', '6355', 'X', 'U', '8435', 'e', 'z', 'u', '6055', 'd', '1493', 'e', '4453', 'X']

SOLUTION: 3941d5506uz

PROBLEM: 24, 24, ['j', '1175', '817', 'a', 'E', 'U', 's', '1355', '103', 'S', '3461', 'w', 'U', 'f', '1991', '9253', '7289', '1475', 'L', 'w', '9763', 'Y', 'Z', '3945']

SOLUTION:
5493