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, 4, ['R', '1121', '5943', '2875']

SOLUTION: R112159432875

PROBLEM: 1, 4, ['L', 'i', '6339', 'p', 'R', '7303', 'R', 'k', '7851']

SOLUTION: Li6339p

PROBLEM: 1, 2, ['9063', '2907']

SOLUTION:
90632907