Given a range [*a*, *b*],
you are to find the summation of all the odd integers in this range. For
example, the summation of all the odd integers in the range [3, 9] is
3 + 5 + 7 + 9 = 24.
There can be at multiple test cases. The first line of input
gives you the number of test cases, *T* (
1*T*100).
Then T test cases follow. Each test case consists of 2 integers *a* and *b* (
0*a**b*100)
in two separate lines.
For each test case you are to print one line of output - the
serial number of the test case followed by the summation of the odd integers in
the range [*a*, *b*].
2
1
5
3
5

Case 1: 9
Case 2: 8

Miguel Revilla
2004-12-02