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: 2, 7, ['4735', '4943', '391', '1951', '8785', '4869', '3971']

SOLUTION: 49433911951878548693971

PROBLEM: 3, 5, ['w', 'B', 'N', 'D', 'm']

SOLUTION: NDm

PROBLEM: 13, 18, ['6949', '2845', 'X', 'k', 'D', 's', '5975', 'A', 'E', '6101', 'Q', '4815', 'q', 'I', 'h', '3399', 'm', 'B', 'q', '37', 's', 'R', '6651', '5893', 'V', 'b']

SOLUTION:
qIh3399mB