UVA 11479 – Is this the easiest problem?

Accepted code:

I have tested with some critical input after implementing the first logic and also read the condition for testcases .It is very important to make it accepted.

Critical input:
4
100 200 300
500 501 502
1000000000 1000000001 1000000002
963 852 741

Critical output:
Case 1: Invalid
Case 2: Scalene
Case 3: Scalene
Case 4: Scalene