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:
3, 5, ['w', 'B', 'N', 'D', 'm']
answer:
NDm


question:
5, 6, ['C', 'z', 'y', '2559', '817', 'A', 'X', 'l', '749', 'B', 'p', '5497', '5577', 'b', '5457', 'G', 'o', 'z']
answer:
817A


question:
1, 2, ['1511', 'D']
answer:

1511D