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:
2, 10, ['8615', '4155', 'k', '1061', '6223', 'V', '379', '4369', 'n', 'U', 'u', '5007', 'q', 'f']
answer:
4155k10616223V3794369nU


question:
2, 4, ['5237', 'X', '1691', '5405']
answer:
X16915405


question:
1, 1, ['N', '1639', 'i', '9843', '1785', '9163', 'o', 'U', 'y']
answer:

N