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: 1, 2, ['7161', '3547', 'u']

SOLUTION: 71613547

PROBLEM: 10, 12, ['8923', '3403', 'G', '3463', '2815', '3175', 'Y', 'S', '5771', 'r', '2019', '7745', 'S', 'Q', 'b', 'L', 'A', '1093']

SOLUTION: r20197745

PROBLEM: 2, 4, ['7781', '5573', 'q', 'I', 'U', 'U']

SOLUTION:
5573qI