Definition: 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.
Input: 8, 18, ['6107', 'd', 'l', '6317', '4919', 'g', '5153', '6737', '9679', '7383', '4507', '7851', '3797', 'o', '2057', '2571', '1843', 'R', 'R']

673796797383450778513797o205725711843R