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, 5, ['E', 'h', 'N', '9931', 'F', '9367', 'N', 'K', 'Y', '1449', '8503', '9277', 'k', '9627', 'Q', 'v']

SOLUTION: F1399NhE

PROBLEM: 1, 1, ['4865', 'y']

SOLUTION: 5684

PROBLEM: 11, 11, ['O', 'A', 'j', 'e', 'Z', '4345', 'g', '4253', '5367', '8923', 'C', '8625', '249']

SOLUTION:
C