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, 4, ['5373', '6833', 'R', '961', '7647', 'M', 'b', 'u', '59', 'y', '2869', 'H', '1291', 'o', 'O', '7231', '3891', 'Z', '2063', 's', 'y']
answer:
53736833R961


question:
1, 2, ['87', 'd']
answer:
87d


question:
1, 1, ['T', '2621', 'l', '8457', 'Q']
answer:

T