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: 5, 13, ['9669', '7783', 'M', 'Q', 'U', '3521', '9305', 'X', 'd', '7401', '4845', '9237', 'P', 'o', 'O']

SOLUTION: U35219305Xd740148459237P

PROBLEM: 8, 11, ['F', '8031', '1539', '6973', '3103', 'I', '9639', 'm', 'x', 'j', '9811']

SOLUTION: mxj9811

PROBLEM: 1, 2, ['3133', '5081']

SOLUTION:
31335081