Chef and rotation puzzle

Chef's friend Raghu challenged him to solve a puzzle. There is a list of $n$ numbers. We "rotate" this list towards right by $d$ steps. Now we have to find the absolute difference between the sum of the first $k$ elements of the original list and the rotated list. ###Input: - First line will contain $T$, number of testcases. Then the testcases follow. - Each testcase contains two lines of inp