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:
7, 8, ['2669', 'z', '3795', 'G', 'q', '8169', '6933', '3971', 'q', 'M', 'h', 'd', '2085']
answer:
69333971


question:
1, 2, ['k', '9837']
answer:
k9837


question:
3, 7, ['r', '7503', '2167', 'x', '5377', '4499', '5421', '8845', 'J']
answer:

2167x537744995421