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: 3, 11, ['V', '9869', 'f', 'X', '3395', 'k', 'B', '6407', 'J', 'Y', 'B', '5067', '4041', 'g', '5145', '8983', 'o', 'D']

SOLUTION: BYJ7046Bk5933Xf

PROBLEM: 27, 30, ['5597', 'd', 'R', '9463', '5187', '3625', 'x', 'c', '4851', '435', '5719', 's', '2797', '1659', '2379', 's', '8761', 'F', '5895', '4479', 'j', '6487', 'U', 'I', 'p', 'P', '1493', '7893', 'w', 'C']

SOLUTION: Cw39873941

PROBLEM: 2, 2, ['3773', '5921']

SOLUTION:
1295