HDU 5053 the Sum of Cube（数学求立方和）

A range is given, the begin and the end are both integers. You should sum the cube of all the integers in the range.

The first line of the input is T(1 <= T <= 1000), which stands for the number of test cases you need to solve.
Each case of input is a pair of integer A,B(0 < A <= B <= 10000),representing the range[A,B].

For each test case, print a line “Case #t: ”(without quotes, t means the index of the test case) at the beginning. Then output the answer