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, 7, ['4177', 'T', 'Q', '915', '7823', 'm', '6453']

SOLUTION: 3546m3287519QT7714

PROBLEM: 3, 11, ['B', 'V', 'S', '7211', 'U', '7773', '4803', 'z', '9371', 'l', 'S', '1559', 'l', '9203', '9919', 'M']

SOLUTION: Sl1739z30843777U1127S

PROBLEM: 1, 3, ['z', '2473', 'V', '279', '7755', 'G', 'v', '7441']

SOLUTION:
V3742z