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, 4, ['I', 's', 'd', '7253', '4377', '691', '4419']

SOLUTION: sd7253

PROBLEM: 10, 11, ['7999', 'F', '7363', 'E', 'j', '825', 'i', 's', '5691', '1837', '6625']

SOLUTION: 18376625

PROBLEM: 3, 4, ['R', 'O', 'K', 'r', '6491', '9877', '8893']

SOLUTION:
Kr