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: 7, 18, ['Q', 's', '7733', 'K', 'g', 'u', '1313', 'X', '7175', '6143', 'a', '7657', '5349', '1137', 'f', 'p', 'l', 'j', 'y', 'I', 'i', '1799', 'A', 'z']

1313X71756143a765753491137fplj