instruction:
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.
question:
10, 12, ['2911', 'i', '1137', '3241', '3311', '4497', '4243', '5871', 'z', '3415', '8987', 'e', 's']
answer:
34158987e


question:
1, 4, ['L', 'i', '6339', 'p', 'R', '7303', 'R', 'k', '7851']
answer:
Li6339p


question:
4, 14, ['7653', '8523', '3507', '6827', '7973', '7243', 'Y', 'b', 'M', '7825', 'J', 'f', '5707', '5901', 'P']
answer:

682779737243YbM7825Jf57075901