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, 10, ['9543', '2797', '3939', '8207', '329', 'l', '5353', '8849', '5579', '7445']

SOLUTION: 5447975594883535l92370289393

PROBLEM: 2, 22, ['43', 'V', '469', '8463', 'E', 'J', 'N', '4049', 'f', '8529', 'R', 'P', 't', '6217', 'v', '8311', 'R', '2055', 'g', '6011', '2567', 'O', 'r', 'K', '8757', 'l', '9205', 'k', '6959']

SOLUTION: O76521106g5502R1138v7126tPR9258f9404NJE3648964V

PROBLEM: 12, 22, ['A', '6503', '5707', 'N', 'D', 'w', 'H', '4851', '9543', '6687', '9525', '7309', 'b', 'l', '3769', 'x', '7447', '9077', 'L', 'B', '39', 'K', '3829', 'i', '2445']

SOLUTION:
K93BL77097447x9673lb9037