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:
4, 4, ['x', 'B', 'M', '2375', '9021']
answer:
2375


question:
3, 17, ['h', 'P', '5917', '8309', '4307', '8769', 'h', '9959', '9447', 'x', '6891', 'y', 'U', 'l', '6667', 'D', 'Z', 'k', 's', '2833', 'g', 'G', 'I', 'W']
answer:
5917830943078769h99599447x6891yUl6667DZ


question:
4, 15, ['d', 'B', 'e', 'H', 'y', '3211', 'i', '3683', '9705', '4931', 'v', '5053', 'R', 'U', '7435', '2883', '6659', '7893']
answer:

Hy3211i368397054931v5053RU7435