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:
1, 5, ['6769', '6487', 'O', '9983', 'k']
answer:
67696487O9983k


question:
12, 12, ['O', 'y', 'c', 'E', 'g', 'o', '6539', 'r', '8917', '2839', '109', '6143', '3091', 'e', 'S', 'L', 'C', '4359']
answer:
6143


question:
5, 8, ['3385', '4967', 'T', '1709', '4763', '9267', '9131', '4959', '8487', '747', 's', 'H', 'S']
answer:

4763926791314959