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, 7, ['6269', '4995', 'K', 'C', 'p', 'd', '9839', '5131', '5131', '287', '2087']
answer:
4995KCpd9839


question:
6, 10, ['2437', 'n', '5307', '3503', 'l', 'e', '3037', '4389', '5773', 'd', 'a', 'V', 'U']
answer:
e303743895773d


question:
9, 13, ['f', 'M', '5729', '1103', 'W', '8865', '4931', 'N', 'n', 'f', '3953', '7819', '9211', 'V']
answer:

nf395378199211