TASK DEFINITION: In this task, you are given inputs i,j, and A, where i and j are integers and A is a list. You need to concatenate all elements of A from the ith element to the jth element, and print the resultant 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.
PROBLEM: 18, 21, ['k', 'p', 'k', '115', '5813', '4665', '6773', '9965', 'F', '8533', 'c', '8893', 't', '7853', 'g', 't', '1889', 'd', '5063', '279', '9911', 'f', '95', '2895', 'R', '7785', '9179', 'g']

SOLUTION: d50632799911

PROBLEM: 3, 23, ['C', 's', 'j', 'P', 'O', '6289', 'U', '1031', 'c', 'b', '8547', 'b', '9001', '7117', '7107', 'g', '6091', '7525', '7209', '2819', 'f', 'z', '4449', 'N', '4849']

SOLUTION: jPO6289U1031cb8547b900171177107g6091752572092819fz4449

PROBLEM: 12, 19, ['p', '8105', 'c', '8759', '813', 'L', '1451', 'E', 'M', 'N', 'n', '633', '2401', 'p', 'B', 'H', 'G', '2577', 'F', '1045', '8929', '9383']

SOLUTION:
6332401pBHG2577F