Triangle

Problem Description
You are given the side lengths of a triangle, determine is it an acute triangle, right triangle or obtuse triangle.

Input
The first line contains an integer T indicating the number of test cases.
For each test case, there is a single line contains three integer A, B and C indicating the side lengths of the triangle. (You can assume it is a valid triangle)

Technical Specification

1. 1 <= T <= 50
2. 1 <= A,B,C <= 100

Output
For each test case, output the case number first, then output "Acute triangle", "Right triangle" or "Obtuse triangle".

Sample Input
3
2 2 2
4 8 5
3 4 5

Sample Output
Case 1: Acute triangle
Case 2: Obtuse triangle
Case 3: Right triangle

http://blog.csdn.net/u011514451/article/details/41776249