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:
8, 11, ['F', '8031', '1539', '6973', '3103', 'I', '9639', 'm', 'x', 'j', '9811']
answer:
mxj9811


question:
2, 5, ['3451', 'e', '5763', '4231', '4787']
answer:
e576342314787


question:
16, 23, ['8519', 'a', '6975', 'b', 'S', '9951', '7783', 'l', '755', 'F', '8815', '9065', 'H', '39', 'M', '1273', 'L', '6229', '1559', '7827', '5647', 'a', '5399', '2523', '2137', '6031', 'a', '8325', '4747', 'd']
answer:

1273L6229155978275647a5399